''Gymnochanda'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

ray-finned fish Actinopterygii (; ), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish that comprise over 50% of living vertebrate species. They are so called because of their lightly built fins made of webbings of sk ...

es in the family

Ambassidae The Asiatic glassfishes are a family, the Ambassidae, of freshwater and marine ray-finned fishes. Some species are known as perchlets. The family has also been called Chandidae, and some sources continue to use the name, but as Ambassidae was u ...

, the Asiatic glassfishes. They are native to turbid fresh water habitats near

peat Peat is an accumulation of partially Decomposition, decayed vegetation or organic matter. It is unique to natural areas called peatlands, bogs, mires, Moorland, moors, or muskegs. ''Sphagnum'' moss, also called peat moss, is one of the most ...

swamp forest Freshwater swamp forests, or flooded forests, are forests which are inundated with freshwater, either permanently or seasonally. They normally occur along the lower reaches of rivers and around freshwater lakes. Freshwater swamp forests are foun ...

s in

Peninsular Malaysia Peninsular Malaysia, historically known as Malaya and also known as West Malaysia or the Malaysian Peninsula, is the western part of Malaysia that comprises the southern part of the Malay Peninsula on Mainland Southeast Asia and the list of isla ...

Borneo Borneo () is the List of islands by area, third-largest island in the world, with an area of , and population of 23,053,723 (2020 national censuses). Situated at the geographic centre of Maritime Southeast Asia, it is one of the Greater Sunda ...

Sumatra Sumatra () is one of the Sunda Islands of western Indonesia. It is the largest island that is fully within Indonesian territory, as well as the list of islands by area, sixth-largest island in the world at 482,286.55 km2 (182,812 mi. ...

and

Belitung Island Belitung ( Belitung Malay: ''Belitong'', formerly Billiton) is an island on the east coast of Sumatra, Indonesia in the Java Sea. It covers (including offshore islands such as Mendanau Island), and had a population of 309,097 at the 2020 C ...

.Tan, H. H. and K. K. P. Lim. (2014)
''Gymnochanda ploegi'', a new species of ambassid glassperch from West Kalimantan, Indonesia.
''Raffles Bulletin of Zoology'' 62 688–95. They are among the smallest members of the family, reaching a maximum

standard length Fish measurement is the measuring of individual fish and various parts of fish anatomy, their anatomies, for data used in many areas of ichthyology, including Taxonomy (biology), taxonomy and fishery biology. Overall length Standard length (SL) is ...

of depending on the exact species involved. They have no

scales Scale or scales may refer to: Mathematics * Scale (descriptive set theory), an object defined on a set of points * Scale (ratio), the ratio of a linear dimension of a model to the corresponding dimension of the original * Scale factor, a number ...

and are transparent, revealing the silvery sheen of the

peritoneum The peritoneum is the serous membrane forming the lining of the abdominal cavity or coelom in amniotes and some invertebrates, such as annelids. It covers most of the intra-abdominal (or coelomic) organs, and is composed of a layer of mesotheli ...

lining the abdominal cavity. They are

sexually dimorphic Sexual dimorphism is the condition where sexes of the same species exhibit different Morphology (biology), morphological characteristics, including characteristics not directly involved in reproduction. The condition occurs in most dioecy, di ...

, with males bearing longer fins and brighter colors than females.

Species

There are 5 species in the genus: * '' Gymnochanda filamentosa'' Fraser-Brunner, 1955 * '' Gymnochanda flamea'' T. R. Roberts, 1995 * '' Gymnochanda limi'' Kottelat, 1995 * '' Gymnochanda ploegi'' H. H. Tan & K. K. P. Lim, 2014 * '' Gymnochanda verae'' H. H. Tan & K. K. P. Lim, 2011

References

Ambassidae Taxa named by Alec Fraser-Brunner Freshwater fish genera {{Ambassidae-stub