| Family: |
Characidae (Characins; tetras), subfamily: Stethaprioninae |
| Max. size: |
2.92 cm SL (male/unsexed) |
| Environment: |
benthopelagic; freshwater |
| Distribution: |
South America: known only from tributaries of the middle rio Tiquie, a tributary of the rio Uaupes, upper rio Negro basin, Amazonas state, Brazil |
| Diagnosis: |
Dorsal spines (total): 2-2; Dorsal soft rays (total): 9-9; Anal spines: 3-4; Anal soft rays: 19-23; Vertebrae: 33-34. Distinguished from all other species of the genus Hemigrammus by having (in life) an orange blotch, located between two dark humeral blotches, immediately ahead and slightly above the posterior, darker second humeral blotch. Differs further from all congeners, except Hemigrammus haraldi, Hemigrammus luelingi, Hemigrammus neptunus, Hemigrammus ocellifer, Hemigrammus pretoensis, and Hemigrammus pulcher, by the possession of two humeral blotches. Diagnosed from all these species by the absence of a blotch on the caudal peduncle (vs. caudal peduncle blotch present). |
| Biology: |
Caught in moderately large (2-6 m wide) streams, with clear water, carrying little suspended sediment. Also collected from dark-colored waters or muddy, silt-laden waters (Ref. 82434). |
| IUCN Red List Status: |
Least Concern (LC); Date assessed: 07 November 2018 Ref. (130435)
|
| Threat to humans: |
harmless |
Source and more info: www.fishbase.org. For personal, classroom, and other internal use only. Not for publication.