Roestes itupiranga Menezes & Lucena, 1998

Family:  Acestrorhynchidae (Smallscale pike characins), subfamily: Roestinae
Max. size:  14.2 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  South America: Rio Tocantins basin, Brazil.
Diagnosis:  Anal spines: 4-5; Anal soft rays: 38-41; Vertebrae: 39-39. Roestes itupiranga has fewer branched anal-fin rays (38-41) than R. molossus (43-47) and than R. ogilviei (41-43). Can be further distinguished from R. ogilviei by having more scale rows between lateral line and anal-fin origin (18-19, versus 15-16) and more scale rows around caudal peduncle (31-31, versus 27-28).
Biology: 
IUCN Red List Status: Vulnerable (VU); Date assessed: 07 November 2018 (B1ab(iii)) Ref. (130435)
Threat to humans:  harmless


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