SELECT DISTINCT SPECIES.Genus AS ResultField1, SPECIES.Species AS ResultField2, SPECIES.Author AS ResultField3, SPECIES.FBname AS ResultField4, SPECIES.FamCode AS ResultField5, SPECIES.SpecCode AS ID_Field, SPECIES.Length AS ResultField6, SPECIES.LTypeMaxM AS ResultField7, SPECIES.LengthFemale AS ResultField20, SPECIES.LTypeMaxF AS ResultField21, synonyms.year, FAMILIES.CommonName, FAMILIES.Family FROM (SPECIES LEFT JOIN synonyms ON SPECIES.SpecCode = synonyms.SpecCode) INNER JOIN FAMILIES ON SPECIES.FamCode = FAMILIES.FamCode WHERE (FAMILIES.FamCode =SPECIES.FamCode) AND (synonyms.valid <> 0) And ((FAMILIES.FamCode)=658) AND ((Families.Order)= 'Squaliformes') AND ((Species.Genus) = 'Somniosus') And ((FAMILIES.Class)='Elasmobranchii') ORDER BY species.genus, species.species Fish Identification
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Fish Identification: Find Species

Class: Elasmobranchii
Order: Squaliformes
Family: Somniosidae Sleeper sharks

Genus: Somniosus

(See list of species below)

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5 species in
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Photo by Reyes, P.

South Indo-Pacific and So
Max. Length 438 cm TL
Somniosus antarcticus Whitley, 1939

Photo by Reyes, P.
Somniosus antarcticus
[Southern sleeper shark]
No picture found
Western Pacific
Max. Length 130.1 cm TL

Somniosus longus

Photo by Salesjö, A.

Arctic and North Atlantic
Max. Length 730 cm TL
Somniosus microcephalus (Bloch & Schneider, 1801)

Photo by Salesjö, A.
Somniosus microcephalus
[Greenland shark]

Photo by Gadig, O.B.F.

North Pacific.
Max. Length 440 cm TL
Somniosus pacificus Bigelow & Schroeder, 1944

Photo by Gadig, O.B.F.
Somniosus pacificus
[Pacific sleeper shark]

Photo by Cambraia Duarte, P.M.N. (c)ImagDOP

Northeast Atlantic
Max. Length 143 cm TL
Somniosus rostratus (Risso, 1827)

Photo by Cambraia Duarte, P.M.N. (c)ImagDOP
Somniosus rostratus
[Little sleeper shark]

5 species

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Scientific Name English Name Distribution Max. Length (cm) Year
Somniosus antarcticus Southern sleeper shark South Indo-Pacific and So 438 TL 1939
Somniosus longus Western Pacific 130.1 TL 1912
Somniosus microcephalus Greenland shark Arctic and North Atlantic 730 TL 1801
Somniosus pacificus Pacific sleeper shark North Pacific. 440 TL 1944
Somniosus rostratus Little sleeper shark Northeast Atlantic 143 TL 1827

Other identification tools in FishBase

Quick Identification
Identification keys
Identification by morphometrics
Identification by pictures:
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