The fish weighs approximately between 3 to 5 kg and each female fish can contain up to 0.7 to 1.2 kg of roe.

The lumpfish (cyclopterus lumpus) is caught on the west coast of Sweden close to Helsingborg in the south and further north, also on the west coast, by Gothenburg. It is caught from the end of February to the end of May during each year.