Even fish can get bored of the same old, same old. You wouldn't contemplate eating cornflakes at every meal, so why do we think our fish will relish a monotonous diet? Add interest and colour to your fish's diet with a varied menu.

A school of tetras makes a great addition to any aquarium. With over 2,500 species to choose from (a lot more than you'd expect from a fish whose name means 'four'), you'd better start thinking now...