Female salmonid fish such as Atlantic salmon (Salmo salar), rainbow trout (Oncorhynchus mykiss), brown trout (Salmo trutta) and Arctic charr (Salvelinus alpinus) Induction and synchronisation of ovulation for the production of eyed-eggs and fry. Dogs (bitches) Prevention of gonadal function in bitches via long term blockade of gonadotrophin synthesis.