Elasmobranchii (sharks and rays) >
Carcharhiniformes (Ground sharks) >
Pentanchidae (Deepwater catsharks)
Etymology: Apristurus: a-, Latin privative, i.e., without; pristis, from pristes (Gr.), sawyer (but here meaning saw); oura (Gr.), tail, referring to absence of saw-toothed crest of enlarged dermal denticles along upper edge of caudal fin as found in the closely related Pristiurus (=Galeus) (See ETYFish); internatus: Latin for growing among or between, allusion not explained nor evident (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; bathypelagic. Deep-water
Northwest Pacific: East China Sea.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 40.3 cm TL male/unsexed; (Ref. 39431); 41.9 cm TL (female)
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449).
Nakaya, K. and K. Sato, 1999. Species grouping within the genus Apristurus (Elasmobranchii: Scyliorhinidae). p. 307-320 In Séret B. & J.-Y. Sire [eds]. Proc. 5th Indo-Pac. Fish Conf., Noumea, 1997. (Ref. 39431)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
Human uses
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