Cryothenia amphitreta

Description

Cryothenia amphitreta is a species of marine pelagic fish belonging to the family Nototheniidae. It is found in the Antarctic Ross Sea. It has an unusual body structure: the pelvic fins reach only halfway from the pelvic-fin base to the anal origin, and the second dorsal-fin insertion is particularly advanced compared to the anal origin. C. amphitreta is coloured purple-gold with black linings on the mouth, gills cavities, and peritoneum.