Trigonopoma gracile (Kottelat, 1991)
Trigonopoma gracile
photo by Ã…hlander, O.

Family:  Danionidae (Danios), subfamily: Rasborinae
Max. size:  5.5 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater; pH range: 6.5 - 7; dH range: 10
Distribution:  Asia: Indonesia and Malaysia.
Diagnosis:  Differs from all of its congeners by the following combination of characters: lateral line incomplete to absent, perforating 0-6 scales; 29-32 scales along normal course of lateral line; a conspicuous black (bluish black in life) lateral stripe from tip of snout to extremity of median caudal rays; body slender, its depth 4.4-4.8 times in SL (4.0-5.1); caudal peduncle slender than all other Rasbora, its depth 2.3-2.8 times in its length (2.3-3.3); and long and pointed dorsal and anal fins (Ref. 26753).
Biology:  Common in forest streams and clear black water (Ref. 56749). Maximum length 15 cm TL in Ref. 2060.
IUCN Red List Status: Least Concern (LC); Date assessed: 28 April 2020 Ref. (130435)
Threat to humans:  harmless


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