| Family: |
Heptapteridae (Three-barbeled catfishes) |
| Max. size: |
3.81 cm SL (male/unsexed) |
| Environment: |
demersal; freshwater |
| Distribution: |
South America: Napo, Solimões and Ucayali River basins. |
| Diagnosis: |
Vertebrae: 41-42. Possesses the following autapomorphies: lower jaw slightly pronounced; epiphyseal branches of supraorbital latero-sensory canals not fused to each other; preoperculomandibular and postotic latero-sensory canals separated from each other; ventral caudal plate much smaller than dorsal plate, supporting only three rays; and ventral caudal-fin lobe with only three branched rays. Shares with Nemuroglanis pauciradiatus 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 its anal-fin base length 18.4-26.4% SL; caudal peduncle length 11.3-14.5% SL; maxillary barbel length 39.8-58.6% SL; and vertebrae 41-42 (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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