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Nemuroglanis pauciradiatus Ferraris, 1988 |
| 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 | |||