| Family: |
Rivulidae (Rivulines), subfamily: Cynolebiinae |
| Max. size: |
8.23 cm SL (male/unsexed); 7.07 cm SL (female) |
| Environment: |
benthopelagic; freshwater |
| Distribution: |
South America: Verde river drainage, São Francisco River basin in Brazil. |
| Diagnosis: |
Dorsal soft rays (total): 15-18; Anal soft rays: 18-21; Vertebrae: 35-36. Cynolebias oticus can be diagnosed from all species of the C. perforatus group by having the otic and post-otic series of neuromasts often united, in close proximity when not united (vs. separated by interspace) and dorsal profile of the head always concave (vs. not concave at least in larger males above 7 cm SL (Ref. 97357). |
| Biology: |
Occurs in temporary pools of the Verde river drainage, near the village of Pindaí. The region has been highly deforested in recent years, resulting to the extinction of some seasonal killifishes (Cynolebias gilbertoi, C. leptocephalus, Hypsolebias fulminantis) previously inhabiting the area. C. oticus can still be easily found in the area even under such condition (Ref. 97357). |
| IUCN Red List Status: |
Vulnerable (VU); Date assessed: 04 February 2021 (D2) Ref. (130435)
|
| Threat to humans: |
harmless |
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