Roughhead grenadier
📖 Overview
Epibenthic, in deep waters down to 2740 . Adults are commonly found in about 300-500 m depth. Temperature preferences appear to range from about 1-4°C, although bottom temperatures below 0°C have been recorded at capture depths. Amphipods predominate in the diet, although polychaetes and various natant crustaceans are also important. Also feed on bivalves, isopods, echinoderms (notably ophiuroids), and ctenophores . Batch spawner .
🔬 Taxonomy
🐟 Physical Description
Dorsal spines (total): 0; Anal spines: 0. Snout short, rather strongly pointed; mouth small, inferior. Underside of head almost entirely naked. Pyloric caeca about 19 or 20. Overall color is gray, darker ventrally on trunk; anal fin dark-edged, first dorsal and pectoral fins dusky . Front end of dorsal fin spine is serrated .: elongated; Cross section: circular.
🌀 Behaviour
Behavioural data for Roughhead grenadier is currently being reviewed.
🦐 Diet
Diet information for Roughhead grenadier is currently being compiled.
🥚 Reproduction
🌍 Habitat & Distribution
Marine; benthopelagic; non-migratory; depth range 100 - 1000 m , usually 300 - 500 m . Temperate; 0°C - 4°C ; 82°N - 37°N, 95°W - 61°E North Atlantic: Norfolk Canyon and George Bank north to Labrador, Davis Strait, eastern and western Greenland, Iceland, and from the Irish Atlantic slope north to Faeroe Islands, Norwegian coast, to Spitzbergen, and to the Barents Sea.
🌿 Ecology
bivalves, isopods, echinoderms (notably ophiuroids), and ctenophores (Ref
📐 Morphometrics
🌡️ Water Parameters & Tolerance
📊 Population Risk & Fisheries
🍽️ Edibility & Flavour
"Roughhead grenadier is an edible species."
- Clear, bright eyes — cloudy eyes indicate age
- Firm flesh that springs back when pressed
- Fresh ocean smell, never strong or ammonia-like
- Bright red or pink gills, not grey or brown
- Shiny, moist skin with scales tightly attached
- Cloudy or sunken eyes
- Strong fishy or ammonia odour
- Soft, mushy flesh that doesn't spring back
- Discoloured or dry flesh
⚡ Nutrition
Per 100g cooked - Source: USDA FoodData Central
| Nutrient | Amount |
|---|---|
| Protein | 16.6 g |
| Omega-3 (total) | 328 mg |
🔬 Mercury Safety
Mercury data for Roughhead grenadier has not yet been assigned. Please consult FDA/EPA guidance for general seafood safety advice.
🌿 Sustainability
🌐 Names & Taxonomy
| Language | Common Names |
|---|---|
| 🇬🇧English | Onion eye · Onion-eye grenadier · Roughhead grenadier · grenadier · rat-tail · rough rat-tail · roughead greanadier · smoothspined grenadier |
| 🌍CES | hlavoun severní |
| 🇩🇰Danish | Nordlig skolæst · langhale |
| 🇩🇪German | Grenadierfisch · Rauhköpfiger Grenadierfisch |
| 🇫🇮Finnish | Isolestikala · jäälestikala |
| 🇫🇷French | Grenadier · Grenadier, Grenadier berglax, Grenadier gris · grenadier berglax |
| 🌍ISL | Langhali · Snarphali · snarpi langhali |
| 🇳🇱Dutch | Zaagvingrenadier · grenadiervis · noordelijke grenadier |
| 🌍NNO | isgalt · havmus · løkfisk |
| 🌍NOB | havmus · isgalt · løkfisk |
| 🇳🇴Norwegian | Isgalt |
| 🇵🇱Polish | Bulawik siwy |
| 🌍RON | Grenadier |
| 🇷🇺Russian | siewiernyj · Северный макрурус |
| 🇪🇸Spanish | Grenadero de roca |
| 🇸🇪Swedish | Långstjärt |
🔍 Similar Species
🗺️ Global Occurrence Map
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 43 records indexed .
👥 Community & Contribute
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