Austrolebias charrua Costa & Cheffe, 2001 |
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photo by
Loureiro, M. |
Family: | Rivulidae (Rivulines), subfamily: Cynolebiinae | |||
Max. size: | 4.72 cm SL (male/unsexed); 4.17 cm SL (female) | |||
Environment: | benthopelagic; freshwater, non-migratory | |||
Distribution: | South America: Laguna dos Patos basin in Brazil. | |||
Diagnosis: | Dorsal spines (total): 0-0; Dorsal soft rays (total): 16-26; Anal spines: 0-0; Anal soft rays: 21-29; Vertebrae: 28-31. Two apomorphic color patterns, body bright gray with dark gray to black stripes in males (versus light gray or no stripes; stripes of equal size to, or wider than the light interspaces) and a vertically paired black blotch on caudal peduncle of juveniles and females (versus small spots irregularly arranged, or a single round dorsally positioned spot, or no spots on caudal peduncle). Scales on longitudinal series 28-30, supraorbital neuromasts 19-24, caudal fin rounded (fin rays 23-26), pharyngobranchial teeth 2-5. Dorsal fin origin anterior to anal fin origin in females. | |||
Biology: | ||||
IUCN Red List Status: | Not Evaluated (N.E.) Ref. (130435) | |||
Threat to humans: | harmless |