Star rays
| Star rays | ||||||||||||
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Star ray ( Amblyraja radiata ) |
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| Scientific name | ||||||||||||
| Amblyraja radiata | ||||||||||||
| ( Donovan , 1808) |
The star ray ( Amblyraja radiata ) is a ray that can be found in the North Atlantic and the North and Baltic Seas .
features
The star ray reaches a body length of a maximum of one meter, although it is usually only about 60 centimeters long. It has a flattened body typical of rays, which is broad and diamond-shaped. The muzzle is pointed, the eyes and injection holes small and the pectoral fins rounded. The back side is light brown with numerous small spots, the underside is colored white.
The two approximately equally long dorsal fins are on the caudal peduncle. There are also numerous small and large thorns on the top.
distribution
The star ray lives on the ocean floor in the North Atlantic from Svalbard and Greenland to the English Channel in the east and Hudson Bay and South Carolina in the west. It can also be found in the North and Baltic Seas , although it can also live in brackish water near larger rivers.
Way of life
Like the majority of rays, the star ray is also a bottom-living fish, where it lives mainly on sandy and rocky bottoms at depths between 20 and 100 meters, more rarely it reaches depths of up to 1,000 meters. It feeds on crustaceans , mollusks , echinoderms and smaller fish.
The rays reach sexual maturity from a length of about 30 centimeters. The females lay large, hairy egg capsules about three to seven centimeters long.
supporting documents
- ↑ a b c d e Andreas Vilcinskas : Fish. Central European freshwater species and marine fish from the North and Baltic Seas. BLV, Munich 2000; P. 52, ISBN 3-405-15848-6 .
- ↑ a b c star rays on Fishbase.org (English)
literature
- Andreas Vilcinskas : Fish. Central European freshwater species and marine fish from the North and Baltic Seas. BLV, Munich 2000; P. 52, ISBN 3-405-15848-6 .
Web links
- Star rays on Fishbase.org (English)
- Amblyraja radiata inthe IUCN 2013 Red List of Threatened Species . Posted by: Kulka, DW, Sulikowski, J., Gedamke, J., Pasolini, P. & Endicott, M., 2004. Retrieved September 21, 2013.