Nemuroglanis mariai (Schultz, 1944)

Family:  Heptapteridae (Three-barbeled catfishes)
Max. size:  4.09 cm SL (male/unsexed)
Environment:  demersal; freshwater
Distribution:  South America: western portion of the Orinoco River system, in the Guaviare and Meta River basins of Colombia.
Diagnosis:  Anal soft rays: 13-15; Vertebrae: 42-44. Distinguished from its congeners in having a dorsal caudal plate that supports eight principal rays; ventral caudal plate that articulates with six or seven rays; dorsal caudal-fin lobe with seven branched rays; dorsal caudal-fin lobe long, up to approximately 35% SL; ventral caudal-fin lobe with 15-19 rays; ventral caudal-fin lobe with six branched rays; forked caudal fin; and short maxillary barbels, 33.3-40.4% SL. Differs further from Nemuroglanis lanceolatus in having shorter anal-fin base, 12.4-18.1% SL; and longer caudal peduncle, 17.5-20.1% SL; and from N. pauciradiatus in having more vertebrae, 42-44 and more anal-fin rays, 13-15 (Ref. 55662).
Biology: 
IUCN Red List Status: Least Concern (LC); Date assessed: 07 October 2020 Ref. (130435)
Threat to humans:  harmless


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