Hemibrycon tridens Eigenmann, 1922
Jumping tetra

Family:  Characidae (Characins; tetras), subfamily: Stevardiinae
Max. size:  6.5 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  South America: upper Amazon River basin.
Diagnosis:  Dorsal soft rays (total): 8-8; Anal soft rays: 7-7; Vertebrae: 40-40. This species is readily distinguished from its congeners, except H. beni, by the number of branched anal-fin rays (17 vs. 18-34). It differs from H. beni by the number of lateral line scales (39 vs. 44-53), and by the number of scale rows above and below lateral line (6 and 5 vs. 7-8 and 6-8, respectively); from H. helleri and H. mikrostiktos which have lower branched anal-fin rays (19-23 and 18-21), H. tridens differs by the number of lateral line scales (39 vs. 40-42 and 42-45, respectively) (Ref. 85819).
Biology: 
IUCN Red List Status: Least Concern (LC); Date assessed: 23 April 2014 Ref. (130435)
Threat to humans:  harmless


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