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close this bookBetter Farming Series 38 - Better Freshwater Fish Farming: Raising Fish in Pens and Cages (FAO, 1990, 83 p.)
close this folderPens
View the document(introduction...)
View the documentBuilding a pen
View the documentCarrying small fish
View the documentPutting baby fish into your pen
View the documentFeeding fish in pens
View the documentTaking care of the fish and pen
View the documentHarvesting fish in pens
View the documentNow you must begin again
View the documentRaising your own baby fish in pens

Putting baby fish into your pen

66. If you are raising Tilapia nilotica you will need to put in two baby fish for each square metre of pen. So, if you have built a small pen of 100 square metres you will need 200 baby fish.

Use tilapia nilotica

67. The baby fish that you use should be at least 8 to 10 centimetres long or weigh about 15 to 20 grams each.

Note If you need any help or want to raise a different fish, your extension agent or fishery officer will be able to give you good advice.

68. Just before you put the baby fish in your pen, be sure that the water they are in is not hotter or colder than the water in the pen.

69. You can find this out by putting one of your hands in the water with the fish and the other in the pen.

70. If one is hotter or colder, slowly put water from the pen in the water with the fish until they are both the same.

71. If you do not do this the fish may die when you put them into the pen.

72. Do not pour the fish Into the pen. Gently put the container into the water, tip it a little, and let them swim out by themselves.

Put fish into the water

Put fish into the water