The dogfish Galeus melastomus (family Scyliorhinidae), of the north-east Atlantic, which has dark brown blotches externally and a black interior to the mouth.
Origin
Mid 19th century; earliest use found in William Yarrell (1784–1856), zoologist.
Definition of black-mouthed dogfish in US English:
black-mouthed dogfish
noun
The dogfish Galeus melastomus (family Scyliorhinidae), of the north-east Atlantic, which has dark brown blotches externally and a black interior to the mouth.
Origin
Mid 19th century; earliest use found in William Yarrell (1784–1856), zoologist.