Better Farming Series 38 - Better Freshwater Fish Farming: Raising Fish in Pens and Cages (FAO, 1990, 83 p.): Cages: (introduction...)

Better Farming Series 38 - Better Freshwater Fish Farming: Raising Fish in Pens and Cages (FAO, 1990, 83 p.)

(introduction...)

Preface

Introduction

Raising fish in pens and cages

The baby fish

Pens

(introduction...)

Building a pen

Carrying small fish

Putting baby fish into your pen

Feeding fish in pens

Taking care of the fish and pen

Harvesting fish in pens

Now you must begin again

Raising your own baby fish in pens

Cages

(introduction...)

Building a cage

Carrying small fish

Putting baby fish into your cage

Feeding fish in cages

Taking care of the fish and cage

Harvesting fish in cages

Now you must begin again

Raising your own baby fish in cages

(introduction...)

124. You can build a cage and put it in a stream, a river, a lake or a reservoir.

Stream or river

Lake

Reservoir

125. In addition, as you have already been told, you can put a cage in a fish pond.

Note If you have a fish pond and decide to put in some cages, you will raise many more fish. For example, a pond of 20 by 20 metres (400 square metres) will hold 800 fish. If you also put in 3 cages of 1 cubic metre each, you can raise 450 to 600 more fish. So, in this case you can raise as many as 1400 fish in the same pond.

Pond

3 cages
1 x 1 x 1 m
= 450 to 600 fish
800 + 600 = 1 400 fish in all

126. The water should be deep enough so that when the cage is in place it will be at least 50 centimetres from the bottom.

Cage

127. A cage should be in a place where the flow of water is gentle and not fast. In addition, it should be protected from the wind.

128. The water should be clean You should not put a cage too near an inlet where the water may be muddy or full of rubbish.