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Hypogaleus hyugaensis (Miyosi, 1939)

Blacktip tope
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Hypogaleus hyugaensis   AquaMaps   Data sources: GBIF OBIS
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Image of Hypogaleus hyugaensis (Blacktip tope)
Hypogaleus hyugaensis
Picture by Randall, J.E.

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

Elasmobranchii (sharks and rays) > Carcharhiniformes (Ground sharks) > Triakidae (Houndsharks) > Galeorhininae
Etymology: Hypogaleus: hypo (Gr.), less than, under or beneath, allusion not explained, perhaps alluding to its original position as a subgenus of Galeus. (See ETYFish);  hyugaensis: -ensis, Latin suffix denoting place: Hyuga Nada, Japan, type locality. (See ETYFish).

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

Marine; demersal; depth range 40 - 230 m (Ref. 244). Deep-water; 37°N - 40°S

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

Indo-West Pacific: East Africa and the Persian Gulf to Taiwan and Japan. Reported from Australia (Ref. 6871).

Length at first maturity / Size / Weight / Age

Maturity: Lm ?, range 95 - ? cm
Max length : 127 cm TL male/unsexed; (Ref. 244); 122.0 cm TL (female)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 0; Anal spines: 0. Dull grey dorsally, paler below; front part of snout slightly dusky (Ref. 5485).

Biology     Glossary (e.g. epibenthic)

Inhabits continental shelves (Ref. 244). Feeds on bony fishes and cephalopods (Ref. 6871). Viviparous (Ref. 50449). Utilized as a food fish (Ref. 244).

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

Viviparous (with a yolk-sac placenta), with 10 or 11 young in a litter (Ref. 244). Size of full-term fetuses about 33 to 35 cm (Ref. 244). Gestation period is estimated at 15 months (Ref. 244). 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 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 17 February 2015

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless (Ref. 13563)





Human uses

Fisheries: minor commercial
FAO - Publication: search | FishSource |

More information

Trophic ecology
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References

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Summary page | Point data | Common names | Photos

Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | National databases | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Preferred temperature (Ref. 123201): 19.9 - 27.7, mean 23.8 °C (based on 194 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00427 (0.00183 - 0.00992), b=3.04 (2.83 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  4.2   ±0.7 se; based on diet studies.
Resilience (Ref. 120179):  Low, minimum population doubling time 4.5 - 14 years (Fec=10; gestation about 15 months).
Fishing Vulnerability (Ref. 59153):  Very high vulnerability (76 of 100).
Price category (Ref. 80766):   High.