Telmatherina
Telmatherina is a genus of sailfin silversides endemic to the Indonesian island of Sulawesi. They are restricted to the Malili Lake system, consisting of the large Matano and Towuti, and the small Lontoa (Wawantoa), Mahalona and Masapi. They are also found in rivers and streams that are part of this lake system. Appearance and feeding. "Telmatherina" are fairly small fish, with a maximum length of depending on the exact species. Several of the species are highly variable, occurring in morphs that differ in morphology or colour. The various "Telmatherina" can be slender or high-bodied, may have rounded or  pointed anal fin and second dorsal fin, and can be overall yellow, overall bluish, overall brownish, bluish with yellow fins or greenish with yellow fins. "Telmatherina" typically feed on various small animals, with some species (e.g. "T." sp. "thicklip") mostly eating "Caridina" shrimp, some species (e.g., "T. antoniae" small morph) mostly eating copepods, some (e.g., "T. antoniae" large morph) mostly eating small freshwater snails and land-living insects that end up in the water, and some (e.g., "T. prognatha") mostly eating small fish and land-living insects that end up in the water. "T. sarasinorum" mainly feeds on eggs of  fish. It may cannibalize eggs of its own species (especially male "T. sarasinorum" will do this if it is unclear if he has fertilized the eggs), follow spawning pairs of other "Telmatherina" species (especially "T. antoniae") to eat their eggs, or pretend to be a male partner of a female of another "Telmatherina" species (especially "T. antoniae") to entice her to spawn, only to eat the eggs. Two additional species, "T. abendanoni" and "T. opudi", frequently feed on fish eggs. However, no species take only one type of prey. For example, the fish egg-eating "T. sarasinorum" also frequently take  snails, insects and shrimp, while the fish-eating "T." sp. "elongate" also frequently take shrimp, the shrimp-eating "T." sp. "thicklip" also frequently eat small fish, and the snail-eating "T. wahjui" also take shrimp. In general, species that mainly feed on other fish reach the greatest length and are relatively slender, while species that mainly feed on fish eggs or shrimp have a relatively high body, likely allowing them to make faster turns (necessary to catch relatively mobile shrimp, or outmaneuver fish parents when stealing their eggs). Species feeding mainly on insects or snails tend to have an intermediate  body shape, being neither as slender as fish-eaters, nor as high-bodied as egg- and shrimp-eaters. Shrimp-specialists also tend to have conspicuously fleshy lips. Species. In addition to the species listed below, "Marosatherina ladigesi" was formerly included in "Telmatherina". There are currently 10 recognized species in this genus: