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Characidium dumonti Stabile, dos Reis, Oliveira & da Graça, 2025 |
| Family: | Crenuchidae (South American darters), subfamily: Characidiinae | |||
| Max. size: | 5.64 cm SL (male/unsexed) | |||
| Environment: | benthopelagic; freshwater | |||
| Distribution: | South America: Brazil. | |||
| Diagnosis: | Dorsal soft rays (total): 11-11; Anal soft rays: 8-9. This species is distinguished from its congeners by the following set of characters: conspicuous dark-brown vertical bars present, blotches and spots along the sides of body; scaled isthmus; adipose fin present; five scales series below lateral line present; thin dark midlateral stripe present, occupying half scale height in vertical through dorsal-fin origin and one scale height on caudal peduncle; reticulated colour pattern present, with melanophores along the posterior edge of the scales; dorsal and pelvic-fin height, 19.1%-23.7% and 12.1%-18.1% of Ls and predorsal distance 44.5%-48.0% of Ls (137999). | |||
| Biology: | This species inhabits a fast-flowing stream with a substrate composed of rocks and pebbles of varying sizes over sandy soil. | |||
| IUCN Red List Status: | Not Evaluated (N.E.) Ref. (130435) | |||
| Threat to humans: | harmless | |||