| Cichlidae (Cichlids), subfamily: Geophaginae |
| 10.45 cm SL (male/unsexed) |
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benthopelagic; freshwater |
| South America: rio Negro and rio Uruguay. |
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Dorsal spines (total): 13-15; Dorsal soft rays (total): 9-11; Anal spines: 3-3; Anal soft rays: 8-10. This species is distinguished from its congeners, except G. gymnogenysgymnogenys by its more elongate body (body depth 34.9-38.3% SL, mean = 36.7 vs. 38.6-44.2 % SL, mean = 40.6 in gymnogenys specimens larger than 6.5 cm SL), and by the continuous iridescent olivaceous coloration of males (vs. clearly demarcated iridescent blue spots on the center of each scale) (Ref. 118066). |
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Least Concern (LC); Date assessed: 14 April 2023 Ref. (130435)
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| harmless |
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Type locality of Gymnogeophagus mekinos, Rio Grande do Sul, rio Piraizinho, on road from Bagé to Dom Pedrito, tributary of rio Negro. It inhabits the río Negro, connected to the lower río Uruguay. Report of its presence in the río Tacuarí / lagoa Mirim drainage is probably based on a study using DNA analysis (Ref. 118066). |
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