Better Farming Series 35 - Better Freshwater Fish Farming: Further Improvement (FAO, 1986, 61 p.): The fish: Growing only male fish

Better Farming Series 35 - Better Freshwater Fish Farming: Further Improvement (FAO, 1986, 61 p.)

(introduction...)

Preface

Introduction

(introduction...)

Ways to improve

The ponds

Building even bigger ponds or more ponds

A nursery pond

Filling and emptying smaller ponds

Filling and emptying bigger ponds

Bringing water to your ponds

Raising the level of your water supply

Digging a supply ditch

Digging a return ditch

Controlling the water in your supply ditch

Filling your ponds

How to fill your ponds

Better fertilizing

The fish

Growing fish all year round

Growing only male fish

Harvesting your fish

Harvesting many fish

Harvesting fish when you have a monk

Your farm and your fish- ponds

Your fish- ponds and your health

Growing only male fish

100. You can further improve your fish- farming by growing only male tilapia in your ponds. Male tilapia grow bigger faster because without baby fish to feed, all the food that you put into your ponds will be eaten by the male fish.

101. If you decide to grow male fish, use fish that are at least 10 centimetres long so that you can harvest them sooner. A male fish of this length will be fully grown in three to four months.

102. If you have a nursery pond, you can get male fish from it. The drawing below shows you the difference between male and female tilapia.

Difference between male and female tilapia

103. If you do not have a nursery pond, you may be able to buy male fish from another fish farmer or from a fish culture station.

Buy fish