yup if ya read its also known as .....
Common names
Although the name ‘cod’ is used in other parts of the world to describe fishes unrelated to Gadus morhua, there is no problem of identification in Britain; cod means only this one species and there are no other conflicting common names in general use to confuse the issue.
The name Atlantic cod is sometimes used, particularly in North America, in order to avoid confusion with a quite different species, the Pacific cod, Gadus macrocephalus. Small cod are usually known as codling, and fishes intermediate in size between cod and codling are sometimes called sprags; the sizes to which these names refer are given later in this note. The name poor cod is used to describe a smaller and much less important relative of the cod, Gadus minutus.
Having said that the cod is known as such everywhere in Britain, it may be of interest to list some of the local names that have been applied to this fish from time to time; most of them are now no longer in use, even in remote fishing communities. Among the names are blockie, dolefish, droud,
duncan , heaver, horgan, keelin’, kleg, kylling, poullach, ruggie and stuckie. Cod bearing the colouring and markings peculiar to those caught on rocky ground have been variously known as redware cod, rock cod, warey codlin’ and warey keelin’, while cod caught in poor condition have been named poor John, shingler, slinger, slink and sousler cod. Cod of small size, that is codling, have been known as coddie, josser, purr, Scots Willie, tamling and tommy cod. The recommended retail trade names for the species are cod or codling, according to size.
