From The USDA's APHIS - These guidelines apply to the following farmed species of fish: salmonids and cyprinids. The guidelines may also apply to other fish species. The length of time fish spend on a transport should be as short as possible.
In a new book, The Benefits of Fish Meal in Aquaculture Diets, RD Miles and FA Chapman, from the University of Florida, explain the value of fishmeal in feeds for fish and shrimp.