1.   Different fish species differ Markedly in their ability to deal with different water types.

2.   Instead of waiting for chance spawnings, you can start a breeding programme with any number of different fish species.

3.   You May like to experiment with colour schemes designed to display particular fish species to best advantage.

4.   ...fish species like salmon and trout which go upstream, spawn and then die.

5.   Overfishing threatens the survival of certain fish species.

6.   Both sides also agreed to co-operate to prevent illegal fishing in the area, and to a joint scientific research programme on deep-water fish species in the South Atlantic.

7.   The nutrients cause the growth of algae in rivers and lakes, kill some fish species and deprive the water of oxygen.

8.   Along with basic info on many fish species, it gives ideas of where to angle for what during the long winter months.

9.   Along with providing cover for fish, the trees also provide habitat for aquatic insects, essential food sources during the early stage of most fish species.