Aphyodite grammica Eigenmann, 1912

Family:  Characidae (Characins; tetras), subfamily: Aphyoditeinae
Max. size:  3.2 cm (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  South America: Konawaruk River, lower Essequibo River basin in British Guiana and Rio Negro, upper Rio Amazonas basin.
Diagnosis:  Dorsal soft rays (total): 11-11; Vertebrae: 31-33. Aphyodite grammica can be diagnosed from other species of the genus Aphyodite by having 30-32 longitudinal scales (vs. 26-29). It further differs from A. apiaka by having 9-10 predorsal scales (vs. 7 or 8), 14-16 dentary teeth (vs. 11-13), i10 or i11 pectoral rays (vs. i12), and by the sensory canal of the first infraorbital shorter than half length of the bone (vs. sensory canal of the first infraorbital longer than half length of the bone); and from A. tupebas by possessing tricuspid teeth in the premaxilla and dentary (vs. only conical teeth), and five longitudinal scale rows between dorsal-fin origin and lateral line (vs. four) (Ref. 116757).
Biology: 
IUCN Red List Status: Least Concern (LC); Date assessed: 04 March 2021 Ref. (130435)
Threat to humans:  harmless


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