coarse fish 
noun (plural same) British
Any freshwater fish other than salmon and trout: many of the coarse fish are spawning in the vegetation...Compare with game fish.
- I was pleased and thought that my dad had found a lake or river where we could fish for coarse fish.
- If your rivers are not fishable then why not turn your attention to fly fishing for some of the coarse fish species, such as pike, carp, perch, chub and barbel.
- Barbel spawn between May and July, although unlike many species of coarse fish they can in exceptional years spawn more than once.