Somniosus rostratus

ΑγγλικάDiagnosis: Somniosus rostratus is distinguished from S. longus in having overall length of second dorsal shorter than first dorsal fin 76-88% (vs. almost equal 91-100%); horizontal diameter of eye less than 37% (mean 33%) of length from snout tip to eye (vs. >37, mean 46%); number of tooth rows in upper jaw 53 (vs. 56-57); and spiral valve counts 23 (vs. 26-27) (Ref. 50224). Description: Grey or brown in color (Ref. 26346). Short, rounded snout; equal-sized dorsal fins, first dorsal fin on back closer to pectorals than pelvic fins; long ventral caudal lobe; short keels on base of caudal fin (Ref. 247).

• Scymnus rostratus Risso, 1827
• Somniosus bauchotae Quéro, 1976