Elasmobranchii (sharks and rays) >
Carcharhiniformes (Ground sharks) >
Triakidae (Houndsharks) > Galeorhininae
Etymology: Hemitriakis: hemi-, from hemisys (Gr.), half, being a genus that Herre believed was “most closely related” to Triakis (See ETYFish); abdita: Latin for hidden, referring to the close external similarity of this sibling species to H. falcata (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; bathydemersal; depth range ? - 225 m (Ref. 26282). Deep-water
Western Central Pacific: Coral Sea off Queensland, Australia and from New Caledonia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 59.6 cm TL male/unsexed; (Ref. 31238); 56.1 cm TL (female); max. published weight: 512.00 g (Ref. ); max. published weight: 512.00 g
Holotype collected from a depth of 225 m (Ref. 26282). Ovoviviparous (Ref. 50449).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Ovoviviparous, embryos feed solely on yolk (Ref. 50449).
Compagno, L.J.V. and V.H. Niem, 1998. Triakidae. Houndsharks, smoothhounds, topes. p. 1297-1304. In K.E. Carpenter and V.H. Niem (eds.) FAO identification guide for fishery purposes. The Living Marine Resources of the Western Central Pacific Vol. 2. Rome: FAO. (Ref. 13563)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
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