Butterfly rays

from Wikipedia, the free encyclopedia
Butterfly rays
Gymnura altavela

Gymnura altavela

Subclass : Euselachii
Subclass : Plate gill (Elasmobranchii)
without rank: Stingray (batoidea)
Order : Myliobatiformes
Family : Gymnuridae
Genre : Butterfly rays
Scientific name of the  family
Fowler , 1934
Scientific name of the  genus
van Hasselt , 1823

The butterfly rays ( Gymnura ) are a genus of rays. They live cosmopolitan in all oceans on the coasts of tropical and warm temperate seas, also in the brackish water of river mouths.

Butterfly rays have a body disk that is 1.5 times wider than it is long. The upper surface of the body is bare or, in large species, sometimes covered with tubercles. The tail of the Gymnuridae is very short compared to other rays. The dorsal fin is missing, a poisonous caudal fin spine may be present or absent.

The animals often grow very large. Most species reach spans of 1.50 to 2.50 meters, Gymnura altavela even 4.0 meters. They feed mainly on crustaceans and mussels .


There are 15 species of butterfly rays :


Web links

Commons : Butterfly Rays  - Collection of images, videos and audio files