1- The basic ruling with regard to hunting is that it is permissible except for one who is in a state of Ihram. Fishing and the pursuit of other aquatic creatures is not prohibited for the one who is in Ihram.
2- If the hunter or fisherman does not have any particular need for what he catches, and he is only doing it as a sport (i.e., as a leisure activity or for fun), then hunting or fishing in this case is disliked.