Heteroscymnoides marleyi Fowler, 1934
Longnose pygmy shark
Heteroscymnoides marleyi
photo by FAO

Family:  Dalatiidae (Sleeper sharks)
Max. size:  29 cm TL (male/unsexed)
Environment:  benthopelagic; marine; depth range 0 - 502 m
Distribution:  Southeast Atlantic: near Ascension Island. Western Indian Ocean: Durban, Natal, South Africa.
Diagnosis:  Dorsal spines (total): 0-0; Dorsal soft rays (total): 0-0; Anal spines: 0-0; Anal soft rays: 0-0. A cylindrical, dwarf dogfish shark with a long bulbous snout, small round eyes, and small gill slits; caudal fin paddle-shaped (Ref. 5578). Dark brown with conspicuous light-edged fins (Ref. 5578). Ventral surface covered with minute photophores (Ref. 6577).
Biology:  Probably oceanic (Ref. 5578). The holotype was caught off a beach, but a second specimen was taken in the Atlantic at night between the surface and 502 m (Ref. 247). Food unknown but may subsist on pelagic fish and invertebrates (Ref. 247). Probably ovoviviparous with very few young (Ref. 247).
IUCN Red List Status: Least Concern (LC); Date assessed: 24 April 2018 Ref. (124695)
Threat to humans:  harmless
Country info:   

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