Endangered
Spotless smooth-hound
Mustelus griseus
Spotless smooth-hound is a shark or ray in the family Triakidae (order Carcharhiniformes) — Mustelus griseus, recorded as Endangered.
Appearance
The head is short with a fairly long, bluntly pointed snout and the body is slender. Both the dorsal fins have a curved trailing edge and the distance separating them occupies about 20% of the total length of the fish. The dorsal surface and flanks are grey or greyish-brown and the ventral surface is paler.
Male spotless smooth-hounds grow to a length of about 87 cm (34 in) with females growing to around 100 cm (39 in). It can grow to a length of up to 1 m (3 ft 3 in).
Range and habitat
The spotless smooth-hound is found in the temperate and tropical Pacific Ocean between 40°N and 11°N, off the coast of Vietnam, Japan, China and Taiwan, and possibly the Philippines. It occurs on the continental shelf and in semi-enclosed areas of sea at depths down to 51 m (167 ft) and possibly as deep as 300 metres (980 ft). It is found near the seabed, often over sandy substrates and is thought to feed on crustaceans and other benthic invertebrates.
Pins are Wikidata “endemic to” fields. Orange dots, when present, are GBIF occurrence tiles — survey bias included.
Breeding
Sharks and rays grow slowly and have few young. A fishery that treats them as bycatch can empty a coastal form.
In crisis
Spotless smooth-hound is Endangered on this catalog because that is the IUCN category stored on Wikidata. Confirm the official criteria and any later count on iucnredlist.org.
Sources
Written for this catalog from the English Wikipedia article on Spotless smooth-hound, Wikidata item Q2588881. Family and order context is original field-guide writing about the group, not a copied assessment of this one species. Wikipedia text is CC BY-SA. Not an IUCN assessment. Counts, when quoted, can change — confirm them on the recovery programme and on iucnredlist.org.
