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Nemuroglanis lanceolatus Eigenmann & Eigenmann, 1889 |
| 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 | |||