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Trigonopoma gracile (Kottelat, 1991) |
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photo by
Åhlander, 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 | |||