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Somniosus longus (Tanaka, 1912) Frog shark |
| Family: | Somniosidae (Sleeper sharks) | |||
| Max. size: | 109.8 cm TL (male/unsexed); 130.1 cm TL (female) | |||
| Environment: | bathydemersal; marine; depth range 250 - 1160 m | |||
| Distribution: | Western Pacific: Japan and New Zealand. | |||
| Diagnosis: | Vertebrae: 77-79. Somniosus longus is distinguished from S. rostratus in having a relatively longer second dorsal fin where overall length is almost equal to first dorsal fin 91-100% (vs. 76-88%); slightly larger eye with horizontal diameter more than 37% (mean 46%) of length from snout tip to eye (vs. <37, mean 33%); higher number of tooth rows in upper jaw 56-57 (vs.53); and slightly higher spiral valve counts 26-27 (vs. 23 ) (Ref. 50224). | |||
| Biology: | Caught by crab pot and bottom longline (Ref. 50224). | |||
| IUCN Red List Status: | Data deficient (DD); Date assessed: 02 July 2017 Ref. (130435) | |||
| Threat to humans: | harmless | |||