Rasbora trilineata Steindachner, 1870
Three-lined rasbora
photo by Muséum-Aquarium de Nancy/D. Terver

Family:  Danionidae (Danios), subfamily: Rasborinae
Max. size:  13 cm TL (male/unsexed)
Environment:  benthopelagic; freshwater; pH range: 6 - 8; dH range: 5 - 12
Distribution:  Asia: Mekong and Chao Phraya basins; Malay Peninsula, Sumatra, Borneo. Spread around the world through the aquarium fish trade (Ref. 2091).
Diagnosis:  Dorsal soft rays (total): 9-9; Anal soft rays: 8-8. A short blackish line present on each side along the base of anal fin, the line on both sides uniting behind anal fin and extending to base of caudal fin along the lower edge of caudal peduncle (Ref. 4792); narrow dark mid-lateral stripe on side; black stripe along middle of back (Ref. 43281); 13 predorsal scale rows; no red in caudal fin (Ref. 12693).
Biology:  Found in lakes, swamps, slow flowing areas of rivers, usually in open areas (Ref. 27732, 57235). Seems to prefer habitats in forest (Ref. 56749). A common resident of surface waters in streams, canals, ditches and occasionally of reservoirs in lowland areas (Ref. 12693). Inhabits medium to large rivers, flooded fields and brooks of the middle Mekong (Ref. 12975). Feeds mostly on exogenous insects (Ref. 12693), also takes worms and crustaceans (Ref. 7020). Not seen in markets, but popular in aquarium trade (Ref. 12693, 57235).
IUCN Red List Status: Least Concern (LC); Date assessed: 09 January 2019 Ref. (130435)
Threat to humans:  harmless


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