Hypsolebias guararug
Hypsolebias guararug Abrantes, Berbel-Filho, Carvalho, Ramos & Lima, 2026
Hypsolebias guararug
photo by Abrantes, Y.G. et al., 2026

Family:  Rivulidae (Rivulines), subfamily: Cynolebiinae
Max. size:  3.44 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  South America: Brazil.
Diagnosis:  Dorsal soft rays (total): 13-23; Anal soft rays: 19-24; Vertebrae: 27-28. This species is distinguished from its congeners by the following set of characters: polymorphic males with 1-3 black spots distributed on anterocentral portion of flank and caudal peduncle; pelvic fin rays in adult males 6; scales on longitudinal series 27-28; scales on peduncle series 10-13; infraorbital neuromasts 15-16; head depth in males 52.1-88.4; position of dark grey bar in eye vertical; lateral mandibular neuromasts 10; and vertebrae 27-28 (Ref. 138871).
Biology: 
IUCN Red List Status: Not Evaluated (N.E.) Ref. (130435)
Threat to humans:  harmless


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