''Cynodonichthys'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...

of freshwater killifish in the

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Rivulidae. They are found in Middle America, ranging from southern Mexico (north to

Oaxaca ) , population_note = , population_rank = 10th , timezone1 = CST , utc_offset1 = −6 , timezone1_DST = CDT , utc_offset1_DST = −5 , postal_code_type = Postal ...

and the Yucatán Peninsula), through Central America (where most species live), to Colombia (in the northwest and the Magdalena River basin).Vermeulen, F.B.M. (2013): Four new species of ''Rivulus'' Poey, 1860, subgenus ''Cynodonichthys'' Meek, 1904 (Teleostei: Cyprinodontiformes: Rivulidae) from the Magdalena River Basin, Central Colombia, including notes on ''Rivulus (Cynodonichthys) elegans'' Steindachner, 1880. ''Killi-Data Series, 2013: 42-63.'' They are non-annual killifish (similar to relatives such as '' Anablepsoides'', '' Atlantirivulus'', '' Laimosemion'' and '' Melanorivulus'') and inhabit small forest streams from the lowlands to an altitude of . They are small fish, up to in total length depending on the exact species.

Species

Until 2011, ''Cynodonichthys'' were included in '' Rivulus'', and some prefer to maintain them in that genus. If recognized as a valid genus, there are currently 32 species in ''Cynodonichthys'': * ''

Cynodonichthys azurescens ''Cynodonichthys'' is a genus of freshwater killifish in the family Rivulidae. They are found in Middle America, ranging from southern Mexico (north to Oaxaca and the Yucatán Peninsula), through Central America (where most species live), to Col ...

'' (

Vermeulen Vermeulen is a Dutch toponymic or occupational surname, meaning "from the (wind/water) mill" (modern Dutch ''molen''). It is a contraction of the surname Van der Meulen. In the Netherlands 20,633 people carried the name in 2007, making it the 30th ...

, 2013) * ''

Cynodonichthys birkhahni ''Cynodonichthys'' is a genus of freshwater killifish in the family Rivulidae. They are found in Middle America, ranging from southern Mexico (north to Oaxaca and the Yucatán Peninsula), through Central America (where most species live), to Col ...

'' ( Berkenkamp & Etzel, 1992) * ''

Cynodonichthys boehlkei ''Cynodonichthys'' is a genus of freshwater killifish in the family Rivulidae. They are found in Middle America, ranging from southern Mexico (north to Oaxaca and the Yucatán Peninsula), through Central America (where most species live), to Col ...

'' ( Huber &

Fels Fels is a surname. Notable people with the surname include: *Allan Fels AO (born 1942), Australian economist, lawyer and public servant *Anthony Fels (born 1964), former Australian politician *Edmond de Fels (1858–1951), French diplomat, writer ...

, 1985) * ''

Cynodonichthys brunneus ''Cynodonichthys'' is a genus of freshwater killifish in the family Rivulidae. They are found in Middle America, ranging from southern Mexico (north to Oaxaca and the Yucatán Peninsula), through Central America (where most species live), to Col ...

'' ( Meek & Hildebrand, 1913) * ''

Cynodonichthys chucunaque ''Cynodonichthys'' is a genus of freshwater killifish in the family Rivulidae. They are found in Middle America, ranging from southern Mexico (north to Oaxaca and the Yucatán Peninsula), through Central America (where most species live), to Col ...

'' ( Breder, 1925) * ''

Cynodonichthys degreefi ''Cynodonichthys'' is a genus of freshwater killifish in the family Rivulidae. They are found in Middle America, ranging from southern Mexico (north to Oaxaca and the Yucatán Peninsula), through Central America (where most species live), to Col ...

'' ( Collier, 2016)Collier, G.E. (2016): The ''Rivulus'' of Guatemala: ''Rivulus tenuis'' Meek, 1904, ''Rivulus godmani'' Regan, 1907 and ''Rivulus degreefi'' sp. nov. ''Journal of the American Killifish Association, 49 (2): 34-47.'' * ''

Cynodonichthys elegans ''Cynodonichthys elegans'' is a species of killifish from the family Rivulidae which is found in temporary pools in the Cauca River basin and in the San Juan River in the Chocó Department in Colombia. See also * List of fishes in the Magdal ...

'' (

Steindachner Franz Steindachner (11 November 1834 in Vienna – 10 December 1919 in Vienna) was an Austrian zoologist, ichthyologist, and herpetologist. He published over 200 papers on fishes and over 50 papers on reptiles and amphibians. Steindachner describ ...

, 1880) * '' Cynodonichthys frommi'' ( Berkenkamp & Etzel, 1993) * '' Cynodonichthys fuscolineatus'' ( W. A. Bussing, 1980) * ''

Cynodonichthys glaucus ''Cynodonichthys'' is a genus of freshwater killifish in the family Rivulidae. They are found in Middle America, ranging from southern Mexico (north to Oaxaca and the Yucatán Peninsula), through Central America (where most species live), ...

'' ( W. A. Bussing, 1980) * '' Cynodonichthys godmani'' (

Regan The family name Regan, along with its cognates O'Regan, O Regan, Reagan, and O'Reagan, is an Anglicized form of the Irish surname Ó Riagáin or Ó Ríogáin, from Ua Riagáin. The meaning is likely to have originated in ancient Gaelic ''ri' ...

, 1907) * '' Cynodonichthys hendrichsi'' (

Álvarez Álvarez or Álvares may refer to: People * Álvarez (surname), Spanish surname Places * Alvares (river), a river in northern Spain * Alvares (ski resort), in Iran * Alvares, Iran * Alvares, Portugal * Álvarez, Santa Fe, a town in the province o ...

& Carranza, 1952) * '' Cynodonichthys hildebrandi'' ( G. S. Myers, 1927) * ''

Cynodonichthys isthmensis ''Cynodonichthys'' is a genus of freshwater killifish in the family Rivulidae. They are found in Middle America, ranging from southern Mexico (north to Oaxaca and the Yucatán Peninsula), through Central America (where most species live), ...

'' ( Garman, 1895) * '' Cynodonichthys kuelpmanni'' ( Berkenkamp & Etzel, 1993) * '' Cynodonichthys leucurus'' ( Fowler, 1944) * '' Cynodonichthys magdalenae'' ( C. H. Eigenmann &

Henn Henn is a both a surname and an Estonian masculine given name. Notable people with the surname include: ;As a given name: * Henn-Ants Kurg (1898–1943), Estonian military colonel and diplomat * Henn Pärn (born 1941), Estonian politician * ...

, 1916) * '' Cynodonichthys monikae'' ( Berkenkamp & Etzel, 1995) * '' Cynodonichthys montium'' ( Hildebrand, 1938) * ''

Cynodonichthys myersi ''Cynodonichthys'' is a genus of freshwater killifish in the family Rivulidae. They are found in Middle America, ranging from southern Mexico (north to Oaxaca and the Yucatán Peninsula), through Central America (where most species live), ...

'' ( C. L. Hubbs, 1936) * ''

Cynodonichthys pacificus ''Cynodonichthys'' is a genus of freshwater killifish in the family Rivulidae. They are found in Middle America, ranging from southern Mexico (north to Oaxaca and the Yucatán Peninsula), through Central America (where most species live), ...

'' ( Huber, 1992) * ''

Cynodonichthys pivijay ''Cynodonichthys'' is a genus of freshwater killifish in the family Rivulidae. They are found in Middle America, ranging from southern Mexico (north to Oaxaca and the Yucatán Peninsula), through Central America (where most species live), ...

'' (

, 2013) * ''

Cynodonichthys ribesrubrum ''Cynodonichthys'' is a genus of freshwater killifish in the family Rivulidae. They are found in Middle America, ranging from southern Mexico (north to Oaxaca and the Yucatán Peninsula), through Central America (where most species live), ...

'' (

, 2013) * ''

Cynodonichthys rubripunctatus ''Cynodonichthys'' is a genus of freshwater killifish in the family Rivulidae. They are found in Middle America, ranging from southern Mexico (north to Oaxaca and the Yucatán Peninsula), through Central America (where most species live), ...

'' ( W. A. Bussing, 1980) * '' Cynodonichthys siegfriedi'' ( W. A. Bussing, 1980) * ''

Cynodonichthys sucubti ''Cynodonichthys'' is a genus of freshwater killifish in the family Rivulidae. They are found in Middle America, ranging from southern Mexico (north to Oaxaca and the Yucatán Peninsula), through Central America (where most species live), ...

'' ( Breder, 1925) * ''

Cynodonichthys tenuis ''Cynodonichthys'' is a genus of freshwater killifish in the family Rivulidae. They are found in Middle America, ranging from southern Mexico (north to Oaxaca and the Yucatán Peninsula), through Central America (where most species live), ...

'' Meek, 1904 * ''

Cynodonichthys uroflammeus ''Cynodonichthys'' is a genus of freshwater killifish in the family Rivulidae. They are found in Middle America, ranging from southern Mexico (north to Oaxaca and the Yucatán Peninsula), through Central America (where most species live), ...

'' ( W. A. Bussing, 1980) * '' Cynodonichthys villwocki'' ( Berkenkamp & Etzel, 1997) * '' Cynodonichthys wassmanni'' ( Berkenkamp & Etzel, 1999) * '' Cynodonichthys weberi'' ( Huber, 1992) * ''

Cynodonichthys xi ''Cynodonichthys'' is a genus of freshwater killifish in the family Rivulidae. They are found in Middle America, ranging from southern Mexico (north to Oaxaca and the Yucatán Peninsula), through Central America (where most species live), ...

'' (

, 2013)

References

Rivulidae Freshwater fish genera Taxa named by Seth Eugene Meek {{Cyprinodontiformes-stub