Catalog of Fishes
literature references
FishBase
IUCN Red List
NCBI GenBank
Somniosus longus
(Tanaka, 1912)
Little sleeper shark
Classification: Elasmobranchii Squaliformes Somniosidae
Reference of the original description
Figures and descriptions of the fishes of Japan, including the Riukiu Islands, Bonin Islands, Formosa, Kurile Islands, Korea, and southern Sakhalin. Figures and Descriptions of the Fishes of Japan, 6, 87–108
Figures and descriptions of the fishes of Japan, including the Riukiu Islands, Bonin Islands, Formosa, Kurile Islands, Korea, and southern Sakhalin. Figures and Descriptions of the Fishes of Japan, 6, 87–108
Synonyms / new combinations and misspellings
Heteroscymnus longus, Rhinoscymnus longus, Somniosus (Rhinoscymnus) longus
Heteroscymnus longus, Rhinoscymnus longus, Somniosus (Rhinoscymnus) longus
Description :
Citation: Somniosus longus (Tanaka, 1912): In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 12/2024
Common names
Frog Shark
Frog Shark
Short Description
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 ) [3722]
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 ) [3722]
Distribution
Known from only the northwest Pacific, southwest Pacific and possibly the southeast Pacific, but probably much more widespread. [18934]
Known from only the northwest Pacific, southwest Pacific and possibly the southeast Pacific, but probably much more widespread. [18934]
Remarks
shark-references Species-ID=6496;
shark-references Species-ID=6496;
