genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
of tiny fishes in the family
Eleotridae
Eleotridae is a family of fish commonly known as sleeper gobies, with about 34 genera and 180 species. Most species are found in the tropical Indo-Pacific region, but there are also species in subtropical and temperate regions, warmer parts of th ...
endemic
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...
to the
Amazon Basin
The Amazon basin is the part of South America drained by the Amazon River and its tributaries. The Amazon drainage basin covers an area of about , or about 35.5 percent of the South American continent. It is located in the countries of Bolivi ...
in South America. At less than in
standard length
Fish measurement is the measuring of individual fish and various parts of their anatomies. These data are used in many areas of ichthyology, including taxonomy and fisheries biology.
Overall length
* Standard length (SL) is the length of a fish m ...
they are the smallest sleeper gobies and among the
smallest fish
The world's smallest fish depends on the measurement used.
Based on minimum standard length at maturity the main contenders are ''Paedocypris progenetica'' where females can reach it at ,Microphilypnus'' sleeper gobies are also found in the Amazon,Caires, R.A. (2013). Microphilypnus tapajosensis, a new species of eleotridid from the Tapajós basin, Brazil (Gobioidei: Eleotrididae). Ichthyological Exploration of Freshwaters, 24 (2): 155-160. and sometimes occur together with ''Leptophilypnion''. The bottom-dwelling ''Leptophilypnion'' are typically found in shallow, stagnant or slow-flowing water among soft debris, leaf-litter or water plants.
Species
The recognized species in this genus are:Roberts, T.R. (2013): ''Leptophilypnion'', a new genus with two new species of tiny central Amazonian gobioid fishes (Teleostei, Eleotridae). ''aqua, International Journal of Ichthyology, 19 (2): 85-98.''
* ''
Leptophilypnion fittkaui
''Leptophilypnion'' is a genus of tiny fishes in the family Eleotridae endemism, endemic to the Amazon Basin in South America. At less than in standard length they are the smallest sleeper gobies and among the smallest fish. The larger ''Microph ...