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Gymnotus ardilai Maldonado-Ocampo & Albert, 2004 |
| Family: | Gymnotidae (Naked-back knifefishes), subfamily: Gymnotinae | |||
| Max. size: | ||||
| Environment: | demersal; freshwater | |||
| Distribution: | South America: Rio Magdalena basin in Colombia. | |||
| Diagnosis: | Distinguished from all congeners by the following combination of characters: caudal end of the anal fin with a clear patch; dorso-posterior portion of the preopercle with two laterosensory canal pores ( from the preopercular-mandibular series); progressive loss of alternating dark and light pigments bands with the size; head length, 10.2-11.2% total length; anal fin pterygiophores with many scales (9-10); few pored lateral-line scales to first ramus (47-48); total number of pored lateral-line scales 84 (n=1); relatively large eye, orbital diameter 8.5-9.0% HL) (Ref. 54466). | |||
| Biology: | ||||
| IUCN Red List Status: | Endangered (EN); Date assessed: 10 October 2014 (B1ab(iii)) Ref. (130435) | |||
| Threat to humans: | harmless | |||