Round ray
📖 Overview
Found in deeper shelf and slope waters, in 3-5.5°C water temperature (6902). Benthic . Feed on all kinds of bottom animals with preference for invertebrates like copepods, amphipods and mysids . Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother . Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats . Egg capsules are 3.8-4.2 cm long and 2.4-2.6 cm wide . It is captured at low level by-catch in bottom-trawl and longline fisheries .
🔬 Taxonomy
🐟 Physical Description
Snout is short and obtuse. Midbelt of its disc and upper surface of its tail are rough with large thorns in irregular rows. Upper surface ash gray to chocolate brown. Lower surface white, grayish white, pale gray or light fawn color, sooty patches on pelvic fins and axils of pectoral fins .: other.
🌀 Behaviour
Rajella fyllae feeds on mysids, copepods, crustaceans and amphipods. In breeding, there is a distinct pairing of the male and female, with an "embrace." It is oviparous, the egg cases being oblong with stiff pointed "horns" in the corners; they are deposited in sandy or muddy flats. The egg cases measure 3–4 centimetres (1.2–1.6 in) long and 2–3 centimetres (0.79–1.18 in) wide. The total length of the round ray at birth is around 7–11 centimetres (2.8–4.3 in).
🦐 Diet
🥚 Reproduction
Oviparous, paired eggs are laid. Embryos feed solely on yolk . Distinct pairing with embrace. Young may tend to follow large objects, such as their mother .
🌍 Habitat & Distribution
Marine; bathydemersal; depth range 147 - 2055 m , usually 300 - 800 m . Deep-water; 1°C - 7°C ; 84°N - 40°N, 75°W - 55°E south of Iceland, and along Faroe-Shetland ridge to the Skagerrak; west of British Isles from Porcupine Bank and Rockall Plateau to Faroe Islands; and off Norwegian coasts to western Barents Sea and Svalbard.
🌿 Ecology
all kinds of bottom animals with preference for invertebrates (Ref
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🌐 Names & Taxonomy
| Language | Common Names |
|---|---|
| 🇬🇧English | Nova Scotia skate · Round ray · Round skate · Sandy Skate |
| 🌍CES | rejnok listový |
| 🇩🇰Danish | Fyllas rokke |
| 🇩🇪German | Fyllarochen · Fyllasrochen |
| 🇫🇮Finnish | Pyörörausku |
| 🇫🇷French | Raie ronde |
| 🌍ISL | Pólskata |
| 🇮🇹Italian | Razza tonda |
| 🌍LIT | apvalioji raja |
| 🇳🇱Dutch | Fylla's rog |
| 🌍NNO | rundskate |
| 🌍NOB | rundskate |
| 🇳🇴Norwegian | Rundskate |
| 🇵🇱Polish | Raja listnik |
| 🇵🇹Portuguese | Raia-tapete |
| 🇷🇺Russian | Kruglyi Skat · Круглый скат |
| 🇪🇸Spanish | Raya Redonda |
| 🇸🇪Swedish | Rundrocka |
Scientific Synonyms
| Scientific Name | Author | Year | Status |
|---|---|---|---|
| Raja fyllae | Lütken | 1887 | Synonym |
| Raja fyllae lipacantha | Jensen | 1905 | Synonym |
🔍 Similar Species
🗺️ Global Occurrence Map
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 35 records indexed .
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