Tetronarce tokionis (Tanaka, 1908)
Trapezoid torpedo
Tetronarce tokionis
photo by Shao, K.T.

Family:  Torpedinidae (Electric rays)
Max. size:  69.3 cm TL (male/unsexed)
Environment:  demersal; marine; depth range 220 - 1100 m
Distribution:  Northwest Pacific: Japan and Taiwan.
Diagnosis:   
Biology:  Inhabits shelf edges to about 1000 m (Ref. 41299). Ovoviviparous (Ref. 50449). Maturity size of males at ca. 68 cm TL; birth size at ca. 20 cm TL (Ref. 114953). Reported to be infrequently captured as by-catch, but of no commercial importance (Ref. 94813).
IUCN Red List Status: Least Concern (LC); Date assessed: 29 August 2019 Ref. (130435)
Threat to humans:  harmless


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