Grey Gurnard (Bycatch)

Grey gurnard is mainly bycatchBycatch:
Species caught next to species targeted for fishery. By-catches can consist of non-commercial species and species that are too small, and can be kept (this part is sometimes called by-product) or thrown back into the sea (discards).  in the [bottom trawl] fishery. There is much bycatch in this fishing method, mainly undersizedUndersized fish:
Fish smaller than a prescribed minimum size. These sizes are determined per species and per country. For Europe, a minimum landing size applies to all EU Member States.  fish. With bottom trawl fishing there is direct disturbance of the seabed and bottom life.

Although the gurnard fishery is becoming more popular, the catch of gurnard is not regulated. Reliable catch data of gurnard lack and therefore the stock size is unknown. Still, gurnard is probably not overfishedOverfished:
A stock is overfished when the stock size has decreased so far that it can no longer produce a maximum sustainable yield. The size of the fish populations is insufficient to reproduce in the long term. : there is little focused fishery on gurnard and catches are limited. This species is indirectly controlled by the catch restrictions in the fisheries that have gurnard as bycatch, like the flatfish fishery.