Electrophorus varii de Santana, Wosiacki, Crampton, Sabaj, Dillman, Mendes-Júnior & Castro e Castro, 2019

Family:  Gymnotidae (Naked-back knifefishes), subfamily: Electrophorinae
Max. size:  148.5 cm TL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  South America: lowland floodplain and terra-firme systems of the intercratonic Amazon Basin; including some streams in the Guiana Shield.
Diagnosis:  This species is distinguished by the following characters: pectoral-fin rays 20-28; lateral-line pores 124-186 ((vs. 32-38 and 88-101, respectively, in E. electricus); narrow head (vs. wide in E. voltai); the distance between medial margins of contralateral dentaries at transverse through last two ventral pores is 2-3 times shorter than E. voltai; deep skull, cleithrum lies between vertebrae 1 and 2 (vs. depressed with cleithrum lying between vertebrae 5 and 6, in E. electricus and E. voltai). Low-voltage electric organ discharges or EOD duration 1.24-1.78 ms, high-voltage EOD 151 V (20.0 cm TL) to 572 V (60.9 cm TL) (Ref. 120918).
Biology: 
IUCN Red List Status: Not Evaluated (N.E.) Ref. (130435)
Threat to humans:  harmless


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