Elasmobranchii (sharks and rays) >
Torpediniformes (Electric rays) >
Narkidae (Sleeper rays)
Etymology: Crassinarke: Latin, crassus = fat, thick + Greek, narke = to narcotize (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range 80 - ? m (Ref. 58018). Temperate
Western Pacific: southern Japan to the South China Sea.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 13.7 cm TL male/unsexed; (Ref. 50165)
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Mould, B., 1994. A world list of rays. The scientific nomenclature and distribution of the recent Batoidea (Batoidea, Elasmobranchii, Chondrichthyes). University of Nottingham, [UK]. 82 p. (Ref. 8630)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
Human uses
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