Company officials are quick to point out that the new fish produces no more growth hormone than normal salmon.

Large female fish produce more viable offspring and are vital in a population.

Active fish need more space, and produce more waste for your filter to deal with.

So a 30-pound female fish produces about 3 pounds of caviar.

Both systems use a lot of water, and the fish produce waste that is beneficial to the plants.

These fish only spawn once in a spawning season and produce around 75,000 eggs.

This could be related to the loss of waste products and detritus the fish would have produced over the years.

Like birds, fish produce a variety of calls to attract a mate.

There exists concerns that farmed fish cannot produce necessary yields efficiently.

The resulting fish produce broods almost entirely consisting of males.