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Heteroscymnoides marleyi Fowler, 1934

Longnose pygmy shark

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Image of Heteroscymnoides marleyi (Longnose pygmy shark)
Heteroscymnoides marleyi
Picture by FAO

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (sharks and rays) > Squaliformes (Sleeper and dogfish sharks) > Dalatiidae (Sleeper sharks)
Etymology: Heteroscymnoides: -oides, Greek suffix meaning like, resembling, or having the form of: similar to Heteroscymnus (=Somniosus, now in Somniosidae). (See ETYFish);  marleyi: In honor of Natal fisheries officer Harold Walter Bell-Marley (1872-1945), to whom Fowler was “indebted” for many “interesting” South African fishes,” this shark being “another of his numerous discoveries”. (See ETYFish).
More on author: Fowler.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; benthopelagic; depth range 0 - 502 m (Ref. 247). Tropical; 14°S - 30°S

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Southeast Atlantic: near Ascension Island. Western Indian Ocean: Durban, Natal, South Africa.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 29.0 cm TL male/unsexed; (Ref. 5578)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 0; Anal spines: 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     Glossary (e.g. epibenthic)

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).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Distinct pairing with embrace (Ref. 205).

Main reference Upload your references | References | Coordinator : Compagno, Leonard J.V. | Collaborators

Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO. (Ref. 247)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 24 April 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fisheries: of no interest
FAO - Publication: search | FishSource |

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Trophic ecology
Food items
Diet compositions
Food consumptions
Food rations
Predators
Ecology
Ecology
Population dynamics
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Length-weight rel.
Length-length rel.
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Life cycle
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Egg(s)
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Distribution
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BRUVS - Videos
Anatomy
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Physiology
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Nutrients
Oxygen consumptions
Swimming type
Swimming speeds
Visual pigment(s)
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Diseases / Parasites
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Genetics
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