Oilfish
📖 Overview
Usually over the continental shelf, sometimes in oceanic waters down to 800 m . Usually solitary or in pairs near the bottom . Migrates far offshore . Pelagic . Feeds on fish, crustaceans and squid . The peculiar wooden 'palu' or Ruvettus hook is used to catch this species in south central Pacific . The flesh is very oily, with purgative properties, if eaten much . Marketed fresh and as fish cakes in Japan ; also processed into fishmeal . Maximum length reported to reach up to 2 m only (Heemstra, pers. comm. 03/03).
🔬 Taxonomy
🐟 Physical Description
Dorsal spines (total): 13 - 15; Dorsal soft rays (total): 15 - 18; Anal spines: 0; Anal soft rays: 15 - 18; Vertebrae: 32. Skin very rough, scales interspersed with spinous bony tubercles. Mid-ventral (abdominal) keel on the ventral contour. Body is uniformly brown to dark brown, tips of the pectoral and pelvic fins black, margins of the second dorsal and anal fins white in young specimens.: elongated; Cross section: compressed.
🌀 Behaviour
Behavioural data for Oilfish is currently being reviewed.
🦐 Diet
🥚 Reproduction
🌍 Habitat & Distribution
Marine; benthopelagic; oceanodromous ; depth range 100 - 975 m , usually 200 - 400 m . Subtropical; 55°N - 43°S, 180°W - 180°E
🌿 Ecology
fish, crustaceans and squid (Ref
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
⚠️ Venom Profile
- immediate intense pain
- swelling
- erythema
- occasional nausea and weakness
Analgesia; wound care; tetanus prophylaxis; severe cases may require monitoring for systemic effects.
References: Compiled from Bhide (2018), Halstead et al. (1988) and family-specific envenomation literature
🎣 Angling Guide
- medium-heavy 7ft spinning rod
- 30-50 lb braid
- fluorocarbon leader
- grass flats
- oyster bars
- marsh drains
- deeper channel edges
Use barbless hooks, minimise air exposure, and revive fish head-first in current before release.
⚠️ Slot limits protect breeding-size fish. Verify daily bag limits.
📊 Population Dynamics
| Year | Region | Index | Notes |
|---|---|---|---|
| - | - | - |
🌐 Names & Taxonomy
Scientific Synonyms
| Scientific Name | Author | Year | Status |
|---|---|---|---|
| Rovetus temminckii | Cantraine | 1833 | Synonym |
| Ruvettus delagoensis | Gilchrist & von Bonde | 1924 | Synonym |
| Ruvettus pacificus | Jordan & Jordan | 1922 | Synonym |
| Ruvettus preciosus | Cocco | 1833 | Synonym |
| Ruvettus tydemani | Weber | 1913 | Synonym |
| Ruvettus whakari | Griffin | 1927 | Synonym |
| Tetragonurus simplex | Lowe | 1834 | Synonym |
| Thyrsites acanthoderma | Lowe | 1839 | Synonym |
| Thyrsites scholaris | Poey | 1854 | Synonym |
🔍 Similar Species
🗺️ Global Occurrence Map
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 705 records indexed .
👥 Community & Contribute
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