Trigonostigma

Trigonostigma is a genus of small freshwater ray-finned fishes belonging to the family Danionidae. The fishes in this genus are found in Southeast Asia. These social, colorful freshwater fish are often kept in aquariums.

Trigonostigma
Harlequin rasbora, Trigonostigma heteromorpha
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Cypriniformes
Family:	Danionidae
Subfamily:	Rasborinae
Genus:	Trigonostigma Kottelat & K. E. Witte, 1999
Type species
Rasbora heteromorpha Duncker, 1904

Species

There are currently five recognized species in this genus:^[1]

Species	Common Name	Image
Trigonostigma espei (Meinken, 1967)	Espei rasbora
Trigonostigma hengeli (Meinken, 1956)	Glowlight rasbora
Trigonostigma heteromorpha (Duncker, 1904)	Harlequin rasbora
Trigonostigma somphongsi (Meinken, 1958)	Somphong's rasbora
Trigonostigma truncata (Tan, 2020)[2]