Research focus:
– diversity and evolution of neotropical fishes
– biology of freshwater fish
– phylogenetics and historical biogeography
– vertebrate zoology
– vertebrate evolution
Contact:
e-mail: oldrich.rican@prf.jcu.cz
tel.: +420 387 772 238
room: B 255
links:
Diversity and evolution of neotropical fishes working group
Research and professional interests: Evolution of (fish) biodiversity in the Neotropics and in the tropics in general, phylogeny and historical biogeography, historical ecology and evolution of life history traits, biology of freshwater fishes, rainforest biology, marine biology, geodiversity-biodiversity, phylogeny-ontogeny, vertebrate zoology, vertebrate paleontology, major transformations and adaptations during vertebrate evolution, biology of extinct vertebrates.
Professional training: Analysis of morphological characters, description of species and genera new to science, laboratory morphological and developmental biology techniques, aquaristics, laboratory methods of molecular biology, phylogenetic analysis of morphological and molecular characters, methods of historical biogeography and ecology, molecular clock estimation, logistics of field work, bushcraft, range of fishing methods, scuba diving (diver qualification CMAS P*, PADI P**), freediving, canoeing, kayaking. Languages: Czech (native), English, German, Spanish, (Portuguese, Russian).
Field expeditions (only Neotropics listed): Several years worth of cummulative field work in South and Middle America in the last 21 years in 28 expeditions (2002-2022) into 13 Neotropical countries: 6x Brazil, 5x Argentina, 4x Venezuela, 6x Ecuador, 4x Mexico, 4x Peru, 2x Colombia, 2x Paraguay, Bolivia, Cuba, Costa Rica, Nicaragua, Panama.
Professional impact: Contributed to systematics of 50 genera and 209 species (Eschmeyer’s Catalog of Fishes, 2022). Discoverer and author of 11 genera new to science and 20 species new to science (2003-2022). 1 new species dedicated name. Discoverer of several adaptive radiations of Neotropical cichlids. Most prolific Czech systematic ichthyologist. Most prolific Neotropical cichlid systematist of his generation worldwide.
Current position
2017 – present Associate Professor
Department of Zoology, Faculty of Science, University of South Bohemia, Czech Republic
Previous positions and fellowships
2006-2017 Researcher and Assistant Professor
Department of Zoology, Faculty of Science, University of South Bohemia, Czech Republic.
2008-2010 Postdoc
Department of Zoology, Faculty of Science, University of South Bohemia, Czech Republic.
2005-2009 Research assistant
Laboratory of Fish genetics, Institute of Animal Physiology and Genetics, The Czech Academy of Sciences.
2003, 2005 Visiting researcher
Museo National de Ciencias Naturales (MNCN), Madrid, Spain. 2x SYNTHESYS fellowships from Museo National de Ciencias Naturales.
2002-2004 Visiting researcher and PhD student
Swedish Museum of Natural History / Stockholm University, Sweden. Doctoral scholarship from Stockholm University and 2x SYNTHESYS fellowships from Swedish Museum of Natural History.
2001-2002 Assistant
Laboratory of Molecular Systematics, Biology Center, The Czech Academy of Sciences.
Education
2005 Ph.D., Zoology (thesis: Phylogenetic revision of the Neotropical cichlid fish tribe Heroini).
Faculty of Biological Sciences, University of South Bohemia and Institute of Animal Physiology and Genetics, The Czech Academy of Sciences, Czech Rep.
2002 Master, Zoology
Faculty of Biological Sciences, University of South Bohemia, Czech Rep.
1999 Bachelor, Biology
Faculty of Biological Sciences, University of South Bohemia, Czech Rep.
Further education
- PhD student, Stockholm University and Swedish Museum of Natural History
- Advanced course in Phylogenetic Systematics and Historical Biogeography, 24.2. – 7.3., University of Copenhagen, Denmark.
Awarded grants
2019-2021 Czech Science Foundation grant, GAČR, Genomika replikované diverzifikace cichlid v říčních systémech: Vliv hybridizace na adaptivní radiaci u neotropického rodu Crenicichla (team member)
2016 Research grant, German Cichlid Society (DCG), Investigations of the cichlid fauna of western Amazonia.
2014-2017 Czech Science Foundation grant, GAČR 14-26060P, Comparative phylogeography of southeastern South America based on freshwater fishes (team member).
2014-2016 Czech Science Foundation grant, GAČR 14-28518P, Parallel evolution in Crenicichla (Cichlidae): Sympatric speciation and repeated analogous diversification in complex riverine landscapes (team member)
2009-2012 MSMT and EU funded project CZ.1.07/2.2.00/15.0364, coordinator for Zoology/ later principal coordinator, Molecularization of biological fields at the Faculty of Science, University of South Bohemia.
2008-2010 Research grant, Czech Science Foundation, GAČR 206/08/P003, Phylogeny and biogeography of cichlid fishes in Mesoamerica.
2007 Research grant, German Cichlid Society (DCG), Investigations of the cichlid fauna of southern tropical South America.
2005-2011 MSMT of the Czech Republic Grant MSM6007665801.
2005 Student grant, Grant Agency of the University of South Bohemia (GAJU)
2004 Research grant, Helge Axon´s Johnsons Stiftelse (Sweden), Phylogeny and evolution of Middle American cichlids.
2002-2004 Research stipend from Stockholm University (Sweden)
2002 Student grant, Grant Agency of the University of South Bohemia (GAJU)
2001 Student grant, Grant Agency of FS USB (SGA)
2000 Student grant, Grant Agency of FS USB (SGA)
Teaching
2005-present Sole lecturer/Course garant, Systematic ichthyology KZO / 158, FS USB.
2005-present Sole lecturer/Course garant, Ichthyology KZO / 379, FS USB.
2010-2014 Co-lecturer/Course Garant, Molecular methods in Zoology KZO / 149, FS USB
2011-present Co-lecturer, Vertebrate zoogeography KZO / 369, FS USB.
2011-present Sole lecturer/Course garant, Biogeography KZO / 145, FS USB.
2014-present Sole lecturer/Course garant, Systematic ichthyology, FS Palacky University.
2016-present Sole lecturer/Course garant, Phylogenetics KZO / 595, FS USB.
2016-present Co-lecturer/Course Garant, Advances in phylogenetic research in zoology KZO / 064, FS USB
2023- Sole lecturer//Course garant, Aquaristics KZO / 110, FS USB.
2023- Sole lecturer//Course garant, Mesozoic biology KZO / 111, FS USB.
2023- Sole lecturer//Course garant, Neotropical biology KZO / 112, FS USB.
2023- Sole lecturer//Course garant, Cenozoic biology KZO / 113, FS USB.
2023- Sole lecturer//Course garant, Diversity and evolution of fossil vertebrates
KZO / 114, FS USB.
Supervision of students
Advisor of 5 Bc., 2 Msc, 1 PhD. students (defended theses), PřF JU.
Co-advisor of 1 Bc. student (defended thesis), PřF JU.
Co-advisor of 1 PhD student (defended thesis), PřF UK.
Pangrácová, Anežka. 2022. Bakalářská práce. Morfometrická determinace a diferenciace cichlid rodu Bujurquina. PřF JU.
Frnková, Vanda. 2019. Bakalářská práce. Fylogeneze a biogeografie cichlid rodu Bujurquina z východního úpatí And. PřF JU.
Ježek, Jan. 2019. Bakalářská práce. Ontogeneze zbarvení malých druhů středoamerických cichlid (Amatitlania, Cryptoheros, Hypsophrys, Neetroplus, Panamius). PřF JU.
Pecková, Nikola. 2018. Bakalářská práce. Biogeografická a ekologická evoluce jihoamerických cichlid Krobia, Aequidens a Cichlasoma: taxon cyklus v Amazonii? PřF JU.
Piálek, Lubomír. 2013. Disertační práce. Species diversity and speciation mechanisms in Crenicichla. PřF JU.
Doubnerová, Klára. Magisterská práce. 2011. Historická biogeografie ryb čeledi Cichlidae v zoogeografické provincii Usumacinta (Mexiko, Guatemala, Belize). PřF JU.
Musilová, Zuzana. Disertační práce. 2011. Phylogeny and biogeography of Neotropical and African riverine cichlids: multilocus phylogenetic methods in the evolutionary studies. Školitel práce Jindřich Novák (školitel specialista: Oldřich Říčan). PřF UK.
Piálek, Lubomír. 2009. Magisterská práce. Diverzita a biogeografie rodů Australoheros, Gymnogeophagus a Crenicichla (Perciformes: Cichlidae) v provincii Misiones, Argentina. PřF JU.
Piálek, Lubomír. 2007. Bakalářská práce. Rešerše ke studiu biogeografie cichlid Guyanské vysočiny. Biologická fakulta JU.
Muška, Milan. 2003. Bakalářská práce. Fylogenetické interpretace ontogeneze zbarvení neotropických cichlid tribu Heroini. Školitel práce Jindřich Novák (školitel specialista: Oldřich Říčan). Biologická fakulta JU.
Evaluator/reviewer (since 2006) of 6 Bc., 17 Mgr., 2 PhD theses at FS USB
International conference lectures (selection)
2015 Cichlid Science Meeting (Graz, Austria)
New Crenichla species flock from the Iguazu River
Parallel speciation in Crenicichla
2011 XIX Encontro Brasileiro de Ictologia (Manaus, Brazil), Diversity and biogeography of the cichlid faunas of the southern Brazilian shield, with focus on Argentinean Misiones.
2008 VI Conference of the German Society of Ichthyology (Munich, Germany), Historical biogeography of cichlid fishes in Middle America.
2004 XI European Congress of Ichthyology (Tallin, Estonia), Revision of the ´Cichlasoma´ facetum group (Perciformes: Cichlidae) with description of a new genus and seven new species.
2002 XXI Annual Meeting of the Willi-Hennig-Society (Espoo, Finland), Morphological and molecular supertrees for metazoan phyla: Conflict and accord in diverse comparative datasets. Published as Zrzavý J, Říčan O (2003) Cladistics 19: 162-163.
2001 X European Congress of Ichthyology (Prague, Czech Rep.), Phylogeny of the Middle American cichlid fishes.
Invited lectures abroad (selection)
2014 Universidad Nacional de San Marcos & Museo de Historia Natural (UNMSM, Lima, Peru), Diverzity of speciation mechanisms in Neotropical cichlids.
2014 Pontifica Universidad Javeriana (PUJ, Bogota, Colombia), Diverzity of speciation mechanisms in Neotropical cichlids.
2011 Universidade Federal do Amazonas (UFAM, Manaus AM Brazil), Historical biogeography: life and earth evolve together.
2011 Instituto Nacional de Pesquisas da Amazônia (INPA, Manaus AM Brazil), Historical biogeography: life and earth evolve together.
2005 Museo Nacional de Sciencias Naturales (Madrid, Spain), Phylogeny and systematics of Mesoamerican cichlids
2003 2nd Cichlid meeting (Helsinki, Finland), Coloration ontogeny in Neotropical cichlids.
peer review and scientific service
Journal peer review (selection)
Molecular Phylogenetics and Evolution, BMC Evolutionary Biology, Systematic Biology, Journal of Morphology, International Journal of Evolutionary Biology, Biological Journal of Linnean Society, Evolutionary Ecology, Animal Biodiversity and Conservation, Journal of Applied Ichthyology, Zootaxa, Folia Zoologica, Spixiana, Vertebrate Zoology, Bulletin of Fish Biology, Zoologica Scripta, Freshwater Biology, Journal of Heredity, Revista de Biología Tropical, Genetica, Science.
Grant agency project evaluations
Charles University Grant Agency
Grant Agency of the University of South Bohemia (GAJU), commitee board (zoology) for Natural Sciences (2016-)
Senator (2012-2014), FS USB
International collaborations (last 5 years)
Profs. Jorge Casciotta and Adriana Almirón, Universidad Nacional de La Plata y Museo (UNLP), Argentina; Systematics and evolution of freshwater fishes in Argentina and southern tropical South America.
Prof. Hernan Ortega research group, Universidad Nacional Mayor de San Marcos (UNMSM) y Museo de Historia Natural, Peru; Cichlid evolution in the western (Peruvian and Bolivian) Amazon.
Prof. Javier A. Maldonado Ocampo research group, Pontificia Universidad Javeriana, Bogotá, Colombia; Cichlid evolution in the western Amazon-Orinoco.
Profs. Tomas Hrbek and Izeni Farias research group, Universidade Federal do Amazonas (UFAM, Manaus AM Brazil); Cichlid evolution in the Brazilian Amazon.
Dr. Cecilia Elizabeth Rodriguez Harro, Universidad Estatal Amazónica, Puyo, Pastaza, Ecuador; Cichlid evolution in the western (Ecuadorian) Amazon.
Dr. Héctor Omar Mejía Guerrero research group, Escuela Nacional de Ciencias Biológicas, Col. Casco de Santo Tomás, Ciudad de México; Diversity and evolution of the northern Middle American cichlid fishes with emphasis on the genus Herichthys.
Dr. Laith Jawad, Fish biodiversity consultancy of New Zealand; Analyses of heroine cichlid morphology.
PhD student Edward Burress (Prof. Jonathan Armbruster lab), Auburn University, USA; Crenicichla species flocks, speciation and morphological evolution in cichlids.
Willem Heijns, Netherlands; Mapping of heroine cichlid distribution ranges.
Juan M. Artigas Azas, Mexico; Guru of Mexican fishes – joint research of cichlids of Mexico and Middle America; Cooperation on the largest cichlid database (www.cichlidae.com).
List of publications
Reviews / monographs:
Casciotta J, Almirón A, Ciotek L, Giorgis P, Říčan O, Piálek L, Dragová K, Crocil Y, Montes M, Iwaszkiw J, Puentes A. (2016) Visibilizando lo invisible: Un relevamiento de la diversidad de peces del Parque Nacional Iguazú, Misiones, Argentina / Visualizing the invisible: A survey of the fish diversity of Iguazú National Park, Misiones, Argentina. Historia Natural (Tercera Serie) 6 (2), 5-77
Říčan O, Piálek L, Dragová K, Novák J (2016) Diversity and evolution of the Middle American cichlid fishes (Teleostei: Cichlidae) with revised classification. Vertebrate Zoology 66: 1-102.
Říčan O, Kullander SO. (2008) The Australoheros (Teleostei: Cichlidae) species of the Uruguay and Paraná River drainages. Zootaxa 1724: 1-51.
Říčan O, Musilová Z, Muška M, Novák J (2005) Development of coloration patterns in Neotropical cichlids (Perciformes: Cichlidae: Cichlasomatinae). Folia Zoologica: Monograph 1: 1-46.
Standard-length research papers:
Říčan O, Říčanová Š, Rodriguez Haro LR, Rodriguez Haro CE (2022) Unrecognized species diversity and endemism in the cichlid genus Bujurquina (Teleostei: Cichlidae) together with a molecular phylogeny document large-scale transformation of the western Amazonian river network and reveal complex paleogeography of the Ecuadorian Amazon. Hydrobiologia, https://doi.org/10.1007/s10750-022-05019-z
Burress ED, Piálek L, Casciotta J, Almirón A, Říčan O (2022) Rapid Parallel Morphological and Mechanical Diversification of South American Pike Cichlids (Crenicichla). Systematic Biology, syac018, https://doi.org/10.1093/sysbio/syac018.
Říčan O, Říčanová Š, Almirón A, Casciotta J, Piálek L (2021) Parallel evolution of a new sympatric species pair of Crenicichla (Teleostei: Cichlidae) from Misiones, Argentina with a review of biogeography and mitonuclear discordance in the C. mandelburgeri species complex. Journal of Zoological Systematics and Evolutionary Research 59 (8), 2134-2149.
Říčan O, Dragová K, Almirón A, Casciotta J, Gottwald J, Piálek L (2021) MtDNA species-level phylogeny and delimitation support significantly underestimated diversity and endemism in the largest Neotropical cichlid genus (Cichlidae: Crenicichla). PeerJ 9, e12283.
Pérez-Miranda F, Mejia O, López B, Říčan O (2020) Molecular clocks, biogeography and species diversity in Herichthys with evaluation of the role of Punta del Morro as a vicariant brake along the Mexican Transition Zone in the context of local and global time frame of cichlid diversification. PeerJ 8, e8818.
Pérez-Miranda F, Mejía O, González‐Díaz AA, Martínez-Méndez N, Soto-Galera E, Zúñiga G, Říčan O (2020) The role of head shape and trophic variation in the diversification of the genus Herichthys in sympatry and allopatry. Journal of Fish Biology 96 (6), 1370-1378.
Pérez-Miranda F, Mejía O, Zúñiga G, Soto-Galera E, Říčan O (2019) Feeding ecomorphologies in the fish genus Herichthys (Perciformes: Cichlidae) based on stomach content and lower pharyngeal jaw shape. Revista de Biología Tropical 67 (3), 643-653.
Alonso F, Terán GE, Aguilera G, Říčan O, Casciotta J, Serra WS, Almirón A, Benítez MF, García I, Mirande JM (2019) Description of a new species of the Neotropical cichlid genus Gymnogeophagus Miranda Ribeiro, 1918 (Teleostei: Cichliformes) from the Middle Paraná basin, Misiones, Argentina. PloS one 14 (2), e0210166.
Krásová J, Mikula O, Mazoch V, Bryja J, Říčan O, Šumbera R (2019) Evolution of the Grey-bellied pygmy mouse group: Highly structured molecular diversity with predictable geographic ranges but morphological crypsis. Molecular phylogenetics and evolution 130, 143-155.
Piálek L, Casciotta J, Almirón A, Říčan O (2019) A new pelagic predatory pike cichlid (Teleostei: Cichlidae: Crenicichla) from the C. mandelburgeri species complex with parallel and reticulate evolution. Hydrobiologia 832, 377–395.
Piálek L, Burress E, Dragová K, Almirón A, Casciotta J, Říčan O (2019) Phylogenomics of pike cichlids (Cichlidae: Crenicichla) of the C. mandelburgeri species complex: rapid ecological speciation in the Iguazú River and high endemism in the Middle Paraná basin. Hydrobiologia 832, 355–375.
Říčan O, Říčanová Š, Dragová K, Piálek L, Almirón A, Casciotta J (2019) Species diversity in Gymnogeophagus (Teleostei: Cichlidae) and comparative biogeography of cichlids in the Middle Paraná basin, an emerging hotspot of fish endemism. Hydrobiologia 832, 331–354.
Drag L, Hauck D, Říčan O, Schmitt T, Shovkoon DF, Godunko RJ, Curletti G, Cizek L (2018) Phylogeography of the endangered saproxylic beetle Rosalia longicorn, Rosalia alpina (Coleoptera, Cerambycidae), corresponds with its main host, the European beech (Fagus sylvatica, Fagaceae). Journal of Biogeography 45 (12), 2631-2644.
Pérez-Miranda F, Mejía O, Soto-Galera E, Espinosa-Pérez H, Piálek L, Říčan O (2018) Phylogeny and species diversity of the genus Herichthys (Teleostei: Cichlidae). Journal of Zoological Systematics and Evolutionary Research 56 (2), 223–247.
Burress ED, Piálek L, Casciotta JR, Almirón A, Tan M, Armbruster JW, Říčan O (2018) Island-and lake-like parallel adaptive radiations replicated in rivers. Proceedings of the Royal Society B: Biological Sciences 285 (1870), 20171762.
Casciotta J, Almirón A, Piálek L, Říčan O (2017) Gymnogeophagus taroba (Teleostei: Cichlidae), a new species from the río Iguazú basin, Misiones, Argentina. Historia Natural (Tercera Serie) 7 (2), 5-22
Říčan O (2017) Sympatry and syntopy of cichlids (Teleostei: Cichlidae) in the Selva Central, upper Ucayali river basin, Peru. Checklist 13 (3), 2146.
Musilová Z, Říčan O, Š Říčanová, P Janšta, O Gahura, J Novák (2015) Phylogeny and historical biogeography of trans-Andean cichlid fishes (Teleostei: Cichlidae). Vertebrate Zoology 65: 333-350.
Piálek L, Dragová K, Casciotta J, Almirón A, Říčan O (2015) Description of two new species of Crenicichla (Teleostei: Cichlidae) from the lower Iguazú River with a taxonomic reappraisal of C. iguassuensis, C. tesay and C. yaha. Historia Natural 5: 5-27.
Almirón A, Casciotta J, Piálek L, Doubnerová K, Říčan O (2015) Oligosarcus amome (Ostariophysi: Characidae), a new species from the río Uruguay basin, Misiones, Argentina. Zootaxa 3915: 581-590.
Říčanová S, Koshev Y, Říčan O, Ćosic N, Ćirovic D, Sedláček F, Bryja J. (2013) Multilocus phylogeography of the European ground squirrel: Cryptic interglacial refugia of continental climate in Europe. Molecular Ecology 22: 4256-4269.
Casciotta J, Almirón A., Aichino D, Gómez S, Piálek L, Říčan O. (2013) Crenicichla taikyra (Teleostei: Cichlidae), a new species of pike cichlid from the middle río Paraná, Argentina. Zootaxa 3721: 379–386.
Říčan O, Piálek L, Zardoya R, Doadrio I, Zrzavý J. (2013) Biogeography of the Mesoamerican Cichlidae (Teleostei: Heroini): colonization through the GAARlandia land bridge and early diversification. Journal of Biogeography 40: 579–593.
Piálek L, Říčan O, Casciotta J., Almirón A., Zrzavý J. (2012) Multilocus phylogeny of Crenicichla (Teleostei: Cichlidae), with biogeography of the C. lacustris group: Species flocks as a model for sympatric speciation in rivers. Molecular Phylogenetics and Evolution 62: 46–61.
Casciotta J, Almirón A., Piálek L, Říčan O. (2012) Cyanocharax obi, a new species (Characiformes: Characidae) and the first record of the genus from tributaries of the río Paraná basin, Argentina. Zootaxa 3391: 39–51.
Říčan O, Piálek L, Almirón A., Casciotta J. (2011) Two new species of Australoheros (Teleostei: Cichlidae), with notes on diversity of the genus and biogeography of the Río de la Plata basin. Zootaxa 2982: 1–26.
Casciotta J, Almirón A., Piálek L, Říčan O. (2010) Crenicichla ypo (Teleostei: Cichlidae), a new species from the middle Parana basin in Misiones, Argentina. Neotropical Ichthyology 8: 643-648.
Piálek L, Říčan O, Casciotta J, Almirón A. (2010) Crenicichla hu, a new species of cichlid fish (Teleostei: Cichlidae) from the Paraná drainage in Misiones, Argentina. Zootaxa 2537: 33-46.
Musilová Z, Říčan O, Novák J. (2009) Phylogeny of the Neotropical cichlid fish tribe Cichlasomatini (Teleostei: Cichlidae) based on morphological and molecular data, with the description of a new genus. Journal of Zoological Systematics and Evolutionary Research 47: 234-247.
Říčan O, Zardoya R, Doadrio I. (2008) Phylogenetic relationships of Middle American cichlids (Cichlidae, Heroini) based on combined evidence from nuclear genes, mtDNA, and morphology. Molecular Phylogenetics and Evolution 49: 941-957.
Musilová Z, Říčan O, Janko K, Novák J. (2008) Molecular phylogeny and biogeography of the Neotropical cichlid fish tribe Cichlasomatini (Teleostei: Cichlidae: Cichlasomatinae). Molecular Phylogenetics and Evolution 46: 659-672.
Higham T E, Hulsey CD, Říčan O, Carroll AM (2007) Feeding with speed: prey capture evolution in cichlids. Journal of Evolutionary Biology 20: 70-78.
Concheiro Peréz GA*, Říčan O*, Ortí G, Bermingham E, Doadrio I, Zardoya R (2007) Phylogeny and biogeography of 91 species of heroine cichlids (Teleostei: Cichlidae) based on sequences of the cytochrome b gene. Molecular Phylogenetics and Evolution 43: 91-110.
Říčan O, Kullander SO (2006) Character- and Tree-based delimitation of species in the ´Cichlasoma´ facetum group (Teleostei, Cichlidae) with the description of a new genus. Journal of Zoological Systematics and Evolutionary Research 44: 136-152.
Říčan O, Kullander SO (2003) ‘Cichlasoma’ scitulum: A New Species of Cichlid Fish from the Río de La Plata Region in Argentina, Brazil, and Uruguay. Copeia 2003: 794-802.
Biogeographic and taxonomic notes:
Říčan O, Morgenstern R (2018) Hybrids, not a new rheophilic morph of Vieja hartwegi. DOI: 10.13140/RG.2.2.14727.09123
Říčan O, Říčanová Š (2017) Live coloration, habitat, biogeography and phylogenetic position of Australoheros guarani Říčan & Kullander, 2008 (Teleostei: Cichlidae). Ichthyological Contributions of PecesCriollos 57, 1-6.
Říčan O, Piálek L, Říčanová Š, Dragová K, Almirón A, Casciotta J (2017) First record of Gymnogeophagus constellatus Malabarba, Malabarba & Reis, 2015 (Teleostei: Cichliformes) from Argentina. Ichthyological Contributions of PecesCriollos 56, 1-3.
Casciotta J, Almirón A, Říčanová Š, Dragová K, Piálek L, Alonso F, Říčan O (2017) First record of Gymnogeophagus lipokarenos Malabarba, Malabarba & Reis, 2015 (Teleostei: Cichliformes) from Argentina. Ichthyological Contributions of PecesCriollos 54, 1-5.
Říčan O, Almirón A, Casciotta J (2017) Rediscovery of Crenicichla yaha (Teleostei: Cichlidae). Ichthyological Contributions of PecesCriollos 50, 1-8.
Casciotta J, Almirón A, Říčanová Š, Dragová K, Piálek L, Říčan O (2016) First record of Astyanax xiru Lucena, Castro & Bertaco, 2013 (Characiformes: Characidae) from the río Uruguay basin of Argentina. Ichthyological Contributions of PecesCriollos 42: 1-4.
Almirón A, Casciotta J, Říčanová Š, Dragová K, Piálek L, Říčan O (2016) First record of Diapoma pyrrhopteryx Menezes & Weitzman, 2011 (Characiformes: Characidae) from freshwaters of Argentina. Ichthyological Contributions of PecesCriollos 40: 1-3.
Casciotta J, Almirón A, Doubnerová K, Piálek L, Říčan O (2015) First records of Characidium heirmostigmata and C. serrano (Characiformes: Crenuchidae) from freshwaters of Argentina. Ichthyological Contributions of PecesCriollos 34: 1-3.
Almirón A, Casciotta J, Azpelicueta MM, Aichino D, Piálek L, Doubnerová K, Říčan, O. (2014) First record of the genus Tatia (Siluriformes: Auchenipteridae) in freshwaters of Argentina. Ichthyological Contributions of PecesCriollos 27: 1-5.
Almirón A, Casciotta J, Piálek L, Diaz FR, Říčan O (2014) First record of Rineloricaria reisi, R. stellata and R. zaina (Siluriformes: Loricariidae) from the Río Uruguay basin in Argentina. Check List 10: 1528-1530.
Almirón A, Casciotta J, Bruno MC, Piálek L, Doubnerová K, Říčan, O. (2013) First record and supplementary description of Leporinus amae Godoy, 1980 (Characiformes: Anostomidae) from freshwaters in Argentina. Check List 9: 820–822.
Almirón A, Casciotta J, Piálek L, Říčan, O. (2009) First record of Pimelodus britskii Garavello & Shibatta, 2007 (Siluriformes: Pimelodidae) in freshwaters of Argentina. Ichthyological Contributions of PecesCriollos 12: 1-2.
Novák J, Hanel L, Říčan O (2005) Formosania: a replacement name for Crossostoma Sauvage, 1878 (Teleostei), a junior homonym of Crossostoma Morris and Lycett, 1851 (Gastropoda). Cybium 30: 92.
Other publications:
Romulus Abila, Peter Akoll, Craig Albertson, Diogo Antunes, Taylor Banda, Roger Bills, Alex Bulirani, August Chocha Manda, Andrew S. Cohen, Filipa Cunha-Saraiva, Sofie Derycke, Ian Donohue, Mingliu Du, Akaibe Migumiru Dudu, Bernd Egger, Karoline Fritzsche, Joachim G. Frommen, Hugo F. Gante, Martin J. Genner, Andreas Härer, Hiroki Hata, Kenneth Irvine, Pascal Isumbisho Mwapu, Luc Janssens de Bisthoven, Arne Jungwirth, Prince Kaleme, Cyprien Katongo, Loic Kéver, Stephan Koblmüller, Ad Konings, Anton Lamboj, Franziska Lemmel-Schaedelin, Gonzalo Machado Schiaffino, Koen Martens, Pascal Masilya Mulungula, Axel Meyer, Heather Louise More, Zuzana Musilova, Fidel Muterezi Bukinga, Donatien R. Muzumani, Gaspard Ntakimazi, William Okello, Harris Phiri, Lobomir Pialek, Pierre Denis Plisnier, Joost A.M. Raeymaekers, Jelena Rajkov, Oldřich Říčan, Reade Roberts, Walter Salzburger, Isa Schoen, Kristina M. Sefc, Pooja Singh, Paul Skelton, Kevin Schneider, Jos Snoeks, Christian Sturmbauer, Hannes Svardal, Ola Svensson, Julian Torres Dowdall, George F. Turner, Alexandra Tyers, Jacco C. van Rijssel, Maarten van Steenberge, Maarten Vanhove, Erik Verheyen, Alexandra T. Weber, Olaf Weyl, Angelika Ziegelbecker, Holger Zimmermann. (2016) Oil extraction imperils Africa’s Great Lakes. Science Vol. 354, Issue 6312, pp. 561-562. DOI: 10.1126/science.aal1722
Popularizing publications:
Říčan O (2014) Zur Artenvielfalt der Cichliden in der argentinischen Provinz Misiones. Deutsche Cichliden Gessselschaft-Informationen 45 (9): 182-192 (Cichlid diversity in the Argentinean province of Misiones; Review paper for aquarists)
Říčan O (2006) Cyprinodon diabolis, obratlovec s nejmenším známým areálem výskytu. Akva tera fórum 2006 (10): 44-51 (The search for and exploration of cyprinodontid diversity in the deserts of California and Nevada around Death Valley).
Říčan O (2006) Za rybami do venezuely (5): Nahohřbetí a sumci v llanos. Akva tera fórum 2006 (8): 16-20.
Říčan O (2005) Za rybami do Venezuely (4): Los Llanos. Akva tera fórum 2005 (12): 46-49.
Říčan O (2005) Za rybami do Venezuely (3): Ryby Guyanské vysočiny. Akva tera fórum 2005 (10): 42-45.
Říčan O (2005) Za rybami do Venezuely (2): Podhůří Guyanské vysočiny. Akva tera fórum 2005 (9): 20-23.
Říčan O (2005) Za rybami do Venezuely (1). Akva tera fórum 2005 (7): 6-11 (A five part series introducing my travels and research on freshwater fishes of Venezuela aimed for the aquarists).
Říčan O (2004) Hledá se Joturo. Akvárium Terárium 46 (8): 4-15 (The search for and capture of the two Cuban cichlids and exploration of their connection to the cichlids of Middle America and their colonization of Middle America).
Říčan O, Novák J (2003) Kančíci (15). Akvárium Terárium 46 (8): 52-54.
Říčan O, Novák J (2003) Kančíci (14): Importy kančíků počtvrté. Akvárium Terárium 46 (8): 20-23.
Říčan O, Novák J (2003) Kančíci (13): Importy kančíků potřetí. Akvárium Terárium 46 (7): 28-30.
Říčan O, Novák J (2003) Kančíci (12): Importy kančíků podruhé. Akvárium Terárium 46 (6): 20-23.
Říčan O, Novák J (2003) Kančíci (11): Nové importy. Akvárium Terárium 46 (5): 24-27.
Říčan O, Novák J (2003) Kančíci (10): Křížení kančíků. Akvárium Terárium 46 (4): 15-17.
Říčan O, Novák J (2003) Kančíci (9): Péče o potomstvo. Akvárium Terárium 46 (3): 20-23.
Říčan O, Novák J (2003) Kančíci (8): Potravni specializace kančíků a jejich příbuzných. Akvárium Terárium 46 (2): 24-25.
Říčan O, Novák J (2003) Kančíci (7). Akvárium Terárium 46 (1): 48-50.
Říčan O, Novák J (2002) Kančíci (6). Akvárium Terárium 45 (12): 18-20.
Říčan O, Novák J (2002) Kančíci (5). Akvárium Terárium 45 (11): 26-27.
Říčan O, Novák J (2002) Kančíci (4). Akvárium Terárium 45 (10): 26-31.
Říčan O, Novák J (2002) Kančíci (3). Akvárium Terárium 45 (9): 22-25.
Říčan O, Novák J (2002) Kančíci (2). Akvárium Terárium 45 (8): 18-21.
Říčan O, Novák J (2002) Kančíci. Akvárium Terárium 45 (7): 12-15 (A fifteen part series featuring my undergraduate research on the Middle American cichlids aimed for the aquarists).
Book reviews:
Říčan O (2012) Historical Biogeography of Neotropical Freshwater Fishes. Systematic Biology 61 (3): 543-545.
Říčan O (1998) The origin and evolution of birds. Vesmír 77: 576.