haddock
haddock, (Melanogrammus aeglefinus), valuable North Atlantic food fish of the cod family, Gadidae, that is often smoked and sold as “finnan haddie.” The haddock is a bottom dweller and a carnivore, feeding on invertebrates and some fishes. It resembles the cod and, like its relative, has a chin barbel and two anal and three dorsal fins. It is identified, however, by a dark, rather than light, lateral line and a distinctive dark spot on each shoulder. Colour is otherwise gray or brownish above, paler below. Size is to about 90 cm (3 feet) and 11 kg (24.5 pounds).
This article was most recently revised and updated by John P. Rafferty.
Citation Information
Article Title:
haddock
Website Name:
Encyclopaedia Britannica
Publisher:
Encyclopaedia Britannica, Inc.
Date Published:
11 September 2026
Access Date:
November 14, 2026