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Onesided Livebearer
''Jenynsia'' is a genus of freshwater fishes in the family Anablepidae. Like '' Anableps'' species, they are onesided livebearers: some sources indicate that they only mate on one side, right-"handed" males with left-"handed" females and vice versa. However other sources dispute this. These South American fish are viviparous. Distribution Species of the genus are distributed in the Río de la Plata Basin and Atlantic coastal drainages from Río Negro Province, Argentina, to the city of Rio de Janeiro, Brazil, and in the Andean drainages of northwest Argentina and southern Bolivia. Taxonomy ''Jenynsia'' is the sister group to the genus '' Anableps'' and both are classified in the subfamily Anablepinae; together with the genus ''Oxyzygonectes'' they compose the family Anablepidae. ''Jenynsia'' contains two subgenera. Members of the subgenus ''Plesiojenysia'' Ghedotti, 1998, are distributed in the uplands of southern Brazil. Members of the subgenus ''Jenynsia'' are mor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jenynsia Multidentata
''Jenynsia multidentata'' is a species of killifish from the Family (biology), family Anablepidae. It is a Viviparity, viviparous, Demersal fish, benthopelagic species in the genus Onesided livebearer, ''Jenynsia''. They are onesided livebearers with a clear asymmetry of the males' genitalia. With onset of maturity, the anal fin of male fish develops into a gonopodium which can be brought forward on one side only. Based on the bending to the left or to the right of the tip of the gonopodium, two morphs of male fish can be distinguished. Taxonomy The species ''Jenynsia multidentata'' was originally described in 1842 as ''Lebias multidentata'' by the naturalist Leonard Jenyns. Accepted synonyms are ''Fitzroyia multidentata'' also described by Jenyns in 1842 and ''Poecilia punctata'' which was suggested by Valenciennes in 1846. Geographical distribution ''Jenynsia multidentata'' is the most widespread species of the genus Onesided livebearer, ''Jenynsia''. The distribution is r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brazil
Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area and the seventh most populous. Its capital is Brasília, and its most populous city is São Paulo. The federation is composed of the union of the 26 States of Brazil, states and the Federal District (Brazil), Federal District. It is the largest country to have Portuguese language, Portuguese as an List of territorial entities where Portuguese is an official language, official language and the only one in the Americas; one of the most Multiculturalism, multicultural and ethnically diverse nations, due to over a century of mass Immigration to Brazil, immigration from around the world; and the most populous Catholic Church by country, Roman Catholic-majority country. Bounded by the Atlantic Ocean on the east, Brazil has a Coastline of Brazi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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