Shortspine thornyhead
📖 Overview
Very common on soft bottoms . Oviparous . Eggs are extruded in floating gelatinous masses . Have a thick glandular tissue on posterior margin of fin spines which is believed to be venomous . Rarely taken by game fishers . Flesh sweeter than that of other rockfishes .
🔬 Taxonomy
🐟 Physical Description
Dorsal spines (total): 15 - 17; Dorsal soft rays (total): 8 - 9; Anal spines: 3; Anal soft rays: 4 - 5. Head spines very strong - nasal, preocular, supraocular, postocular, tympanic, parietal and nuchal spines present, coronal spines absent; large head and elongate body; strong spiny ridge on head; 3rd dorsal spine not much longer than 2nd, 4th or 5th; strong notch on pectoral fin . Bright red with some black on fins; gill chamber mostly pale . Caudal slightly rounded .: fusiform / normal.
🌀 Behaviour
Behavioural data for Shortspine thornyhead is currently being reviewed.
🦐 Diet
Nutrition information for shortspine thornyhead is as follows. == References ==
🥚 Reproduction
Unlike other representatives of this group, this species has internal fertilization Oviparous . Females possess specialized ovarian structures including stalk-like ovigerous lamellae and secretory epithelia .
🌍 Habitat & Distribution
Marine; demersal; depth range 17 - 1600 m , usually 91 - ? m . Temperate North Pacific: Sea of Okhotsk north to the Navarin Canyon in the Bering Sea and from Stalemate Bank and Ulm Plateau in the Aleutian Islands southeast to Cedros Island, Baja California, Mexico.
🌿 Ecology
📐 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
🌐 Names & Taxonomy
Scientific Synonyms
| Scientific Name | Author | Year | Status |
|---|---|---|---|
| Sebastes alascanus | Bean | 1890 | Synonym |
| Sebastodes alascanus | Bean | 1890 | Synonym |
🔍 Similar Species
🗺️ Global Occurrence Map
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 22 records indexed .
👥 Community & Contribute
No observations yet - be the first to log one!
View all observations for Shortspine thornyhead ↗Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.
Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.