The Telmatherininae, the sail-fin silversides are a

subfamily In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end subfamily botanical names with "-oideae", and zoologi ...

of atheriniform fish from the rainbowfish family, the Melanotaeniidae, inhabiting fresh and brackish water. All but the species ''

Kalyptatherina helodes The marine sailfin silverside (''Kalyptatherina helodes'') is a species of sailfin silverside endemic to Indonesia, where it is only known from mangrove swamps around Misool and Batanta Islands. This species grows to total length Fish measur ...

'' are restricted to the Indonesian island of

Sulawesi Sulawesi (), also known as Celebes (), is an island in Indonesia. One of the four Greater Sunda Islands, and the world's eleventh-largest island, it is situated east of Borneo, west of the Maluku Islands, and south of Mindanao and the Sulu Ar ...

, and most are found solely in the Malili Lake system, consisting of

Matano Lake Matano ( id, Danau Matano), also known as Matana, is a natural lake in East Luwu Regency, South Sulawesi province, Indonesia. With a depth of , it is the deepest lake in Indonesia (ranked by maximum depth), the 10th deepest lake in the wo ...

and Towuti, and the small Lontoa (Wawantoa), Mahalona and Masapi.Gray, S.M., and J.S. McKinnon (2006). ''A comparative description of mating behaviour in the endemic telmatherinid fishes of Sulawesi's Malili Lakes.'' Environmental Biology of Fishes 75: 471–482Herder, F.; J. Schwarzer; J. Pfaender; R.K. Hadiaty; and U.K. Schliewen (2006).
Preliminary checklist of sailfin silversides (Teleostei: Telmatherinidae) in the Malili Lakes of Sulawesi (Indonesia), with a synopsis of systematics and threats.
'' Verhandlungen der Gesellschaft für Ichthyologie Band 5: 139-163. They are small fish, typically ranging from in length, though the largest ''Paratherina'' can reach almost twice that size. They are named for the sail-like shape of their first dorsal fin in the males, which are also brightly coloured, compared with the females.

References

* {{Taxonbar, from=Q1888483 Melanotaeniidae Fish subfamilies