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Characidium vestigipinne Buckup & Hahn, 2000 |
| Family: | Crenuchidae (South American darters), subfamily: Characidiinae | |||
| Max. size: | 5.1 cm SL (male/unsexed) | |||
| Environment: | benthopelagic; freshwater | |||
| Distribution: | South America: known only from the type locality in the headwaters of Caraguatá River, upper Uruguay River drainage. | |||
| Diagnosis: | Dorsal spines (total): 0-0; Dorsal soft rays (total): 11-13; Anal spines: 0-0; Anal soft rays: 7-9. Roundish black marks on the pelvic, dorsal and anal fins; a black band along the distal margin of anal and pelvic fins; a black band along the distal margin of anal and pelvic fins in adult males (band also present but fainter and narrower in juveniles and females); enlarged anal fin with rounded distal profile in adult males; fins brightly colored with orange or red chromatophores in live adult males; reduction of adipose fin, which may be very small or even absent; lateral line complete or at least extending well beyond the 12th scale of series. | |||
| Biology: | In a small river at 650 m altitude. | |||
| IUCN Red List Status: | Critically Endangered (CR); Date assessed: 07 November 2018 (B2ab(iii)) Ref. (130435) | |||
| Threat to humans: | harmless | |||