| Rivulidae (Rivulines), subfamily: Rivulinae |
| 2.58 cm (male/unsexed); 2.3 cm SL (female) |
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benthopelagic; freshwater |
| South America: swampy floodplains of stream tributary to Sepotuba River, upper Paraguay River basin in central Brazil. |
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Dorsal soft rays (total): 8-10; Anal soft rays: 12-14; Vertebrae: 29-30. Distinguished from all other species of the subgenus Melanorivulus in having small white spots forming a reticulate pattern on the dorsal fin and the basal part of the anal fin, and forming narrow bars on the caudal fin in males, and a narrow basihyal, width about 35% of the basihyal length. Can be diagnosed from all congeners by the unique combination of the following characters: entire flank with a continuous mid-lateral dark gray stripe; scales in longitudinal series 30-31; flank with close red dots, arranged in chevron-like series with the vertex on the mid-lateral line; and caudal fin in males with red bars (Ref. 76975). |
| Found in a shallow (about 10 cm deep), slightly inclined swamp with slow water current, in open vegetation area (Ref. 76975). |
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Data deficient (DD); Date assessed: 07 November 2018 Ref. (130435)
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| harmless |
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Found only in a single locality, swampy floodplains of stream tributary to Sepotuba River, an upper tributary of the Paraguay River basin at the Parecis Hills (Chapada dos Parecis) in central Brazil (Ref. 76975). |
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