Graytail skate
📖 Overview
Graytail skate (Bathyraja griseocauda), first described by Norman, 1937 is a large fish in the family Arhynchobatidae (order Rajiformes). Adults typically reach 49.00 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 94 to 585 metres. It occurs in Deep-water waters. Diet is predominantly piscivorous, targeting other fish and larger prey. On the IUCN Red List, it is classified as Endangered.The species is important as a food fish and a species of conservation concern. As a member of the Arhynchobatidae, it shares life-history and morphological traits with its relatives in the group.
🔬 Taxonomy
🐟 Physical Description
Physical description for Graytail skate is currently being compiled.
🌀 Behaviour
Behavioural data for Graytail skate is currently being reviewed.
🦐 Diet
🥚 Reproduction
Oviparous, paired eggs are laid. Embryos feed solely on yolk . Eggs have horn-like projections on the shell .
🌍 Habitat & Distribution
Marine; bathydemersal; depth range 94 - 585 m . Deep-water; 1°C - ? ; 34°S - 70°S, 77°W - 26°W Southeast Pacific and Southwest Atlantic: Uruguay (Ref.
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🍽️ Edibility & Flavour
"Graytail skate 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
Detailed nutritional data for Graytail skate is currently being compiled from USDA FoodData Central.
🔬 Mercury Safety
Mercury data for Graytail skate has not yet been assigned. Please consult FDA/EPA guidance for general seafood safety advice.
🌿 Sustainability
🔬 Full Nutritional Profile
Per 100g - Raw, per 100g - Source: USDA FoodData Central templates (generic fish average)
📊 Population Dynamics
| Year | Region | Index | Notes |
|---|---|---|---|
| - | - | - |
🌐 Names & Taxonomy
Scientific Synonyms
| Scientific Name | Author | Year | Status |
|---|---|---|---|
| Raja griseocauda | Norman | 1937 | Synonym |
🔍 Similar Species
🗺️ Global Occurrence Map
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 19 records indexed .
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