Under the Common Fisheries Policy basic regulation, there is a duty to keep and land all fish that would previously have been discarded.
O dan reoliad sylfaenol y Polisi Pysgodfeydd Cyffredin, mae dyletswydd i gadw a glanio pob pysgodyn a fyddai'n flaenorol wedi'i daflu yn ôl i'r môr.