Rasboroides

Rasboroides is a genus of freshwater ray-finned fishes belonging to the family Danionidae, the danios or danionins. The fishes in this genus are endemic to Sri Lanka.^[2] They are found in small, slow-flowing and shaded streams in the southwestern part of the island.^[3] They are essentially restricted to lowlands, although one introduced population occurs at an altitude of 980 m (3,220 ft).^[4] They are calm, social and attractively colored fish that sometimes are kept in aquariums.^[4]

Rasboroides
Rasboroides nigromarginatus
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Cypriniformes
Family:	Danionidae
Subfamily:	Rasborinae
Genus:	Rasboroides Brittan, 1954[1]
Type species
Rasbora vaterifloris Deraniyagala, 1930[1]

Species

Historically, there was only a single recognized species in this genus, R. vaterifloris, but in a review in 2013 four species were recognized,^[3] and this is followed by FishBase.^[2] A comprehensive review in 2018 disputed this and only recognized two species, R. pallidus and R. vaterifloris (the other two considered junior synonyms).^[4][5]

Species	Common Name	Image
Rasboroides pallidus Deraniyagala, 1958
Rasboroides vaterifloris (Deraniyagala, 1930)	Pearly rasbora