| Family: |
Crenuchidae (South American darters), subfamily: Characidiinae |
| Max. size: |
2.82 cm SL (male/unsexed) |
| Environment: |
benthopelagic; freshwater |
| Distribution: |
South America: Rio Culuene watershed, upper Rio Xingu drainage in Brazil. |
| Diagnosis: |
Dorsal soft rays (total): 12-13; Anal soft rays: 9-10; Vertebrae: 32-33. Belongs to a group of species, including Characidium nupelia, distinguished uniquely by having high number (12-18) of dark vertical bars on the body, each bar having the width of a scale. Diagnosed by a lower number of scales around the caudal peduncle (10 vs. 12 or more in most Characidium species). Differs from Characidium nupelia by its wider interorbital region (interorbital distance 30.1-38.0 vs. 20.5-28.6% HL) and lower caudal peduncle (caudal peduncle depth 35.4-44.9 vs. 46.2-57.8% HL). Additional conspicuous external characters that are not unique but are helpful in the identification of this species include absence of adipose fin, incomplete lateral line, and presence of a dark blotch on the caudal peduncle (Ref. 75787).
Description: Dorsal fin iii9; iii,10; Anal fin iii,6. iii,7; Pectoral fin iii,8, iii9, iii,10; Pelvic i7, i8 (Ref. 75787). |
| Biology: |
|
| IUCN Red List Status: |
Data deficient (DD); Date assessed: 07 November 2018 Ref. (130435)
|
| Threat to humans: |
harmless |
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