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🌊 Marine Data Deficient 🌡️ Deep-water

Blacktip tope

Hypogaleus hyugaensis Miyosi, 1939
Max Length
127 cm
Max Weight
-
Lifespan
-
Trophic Level
4.2
Depth
40–230 m
Climate
Deep-water
Resilience
Low
Vulnerability
62.00/100
Typical Length
-
Depth Zone
deep-water

📖 Overview

Inhabits continental shelves . Feeds on bony fishes and cephalopods . Viviparous . Utilized as a food fish .

Scientific Name
Hypogaleus hyugaensis
Authority
Miyosi, 1939
Habitat
Marine
Climate
Deep-water
Body Shape
Elongated
IUCN Status
DD
Max Length
127 cm
Depth Range
40–230 m
Latitude
40°S – 37°N
Trophic Level
4.2
Resilience
Low
Vulnerability
62.00/100
Salinity
30–40 ppt

🐟 Physical Description

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

🌀 Behaviour

Behavioural data for Blacktip tope is currently being reviewed.

🦐 Diet

small fish
crustaceans
cephalopods

🥚 Reproduction

🐣 Viviparous 🤰 Viviparous

Viviparous (with a yolk-sac placenta), with 10 or 11 young in a litter . Size of full-term fetuses about 33 to 35 cm . Gestation period is estimated at 15 months . Distinct pairing with embrace .

🌍 Habitat & Distribution

Marine; demersal; depth range 40 - 230 m . Deep-water; 37°N - 40°S West Pacific: East Africa and the Persian Gulf to Taiwan and Japan.

🌿 Ecology

Zone Preferences
🌊 Marine 🌑 Deep Water ⬇️ Benthic
Trophic Level
4.2±0.7
Food Items

bony fishes and cephalopods (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.00437 × L3.04 (TL)
Max TL
127cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Data Deficient
Assessment Date
2023

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
62.00/100
High vulnerability
Trophic Level
4.2
Apex / Top predator
Body Shape
Elongated
Climate Zone
Deep-water
Latitude Range
37°N – 40°S
Described By
Miyosi, 1939

🌐 Names & Taxonomy

Scientific Synonyms

Scientific Name Author Year Status
Eugaleus hyugaensis Miyosi 1939 Synonym
Galeorhinus hyugaensis Miyosi 1939 Synonym
Galeorhinus zanzibarensis Smith 1957 Synonym
Hypogaleus zanzibarensis Smith 1957 Synonym
Hypogaleus zanzibariensis Smith 1957 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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