| Family: |
Heptapteridae (Three-barbeled catfishes) |
| Max. size: |
3.25 cm SL (male/unsexed) |
| Environment: |
demersal; freshwater |
| Distribution: |
South America: Orinoco, Negro and Sanabani River basins. |
| Diagnosis: |
Anal soft rays: 10-11; Vertebrae: 38-40. Having the following autapomorphic characters: postcleithral process expanded; suborbital tubule 3 and respective i5 branch and pore of infraorbital latero-sensory canal absent. Shares with Nemuroglanis lanceolatus the following eight apomorphies: five or six pairs of pleural ribs; dorsal caudal plate supports only six principal caudal-fin rays; ventral caudal plate much smaller than dorsal caudal plate, supporting only three or four rays; dorsal caudal-fin lobe with five or fewer branched rays; dorsal caudal-fin lobe very long, usually greater than 40% SL; ventral caudal-fin lobe usually with nine to 13 rays; ventral caudal-fin lobe with only three or four branched rays; and caudal fin lanceolate. Differ further from its congeners by possessing fewer vertebrae, 38-40 and fewer anal-fin rays, 10-11; maxillary barbel length , 38.8-55.8% SL; and anal-fin base length, 13.9-16.2% SL (Ref. 55662). |
| Biology: |
|
| IUCN Red List Status: |
Least Concern (LC); Date assessed: 25 August 2020 Ref. (130435)
|
| Threat to humans: |
harmless |
| Country info: |
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