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Organic fertilizers for fish ponds
(2019-12-05)
Organic fertilizers are usually animal manures or plant wastes and cuttings ("green manure"). Manure from chickens, goats, sheep, ducks, pigs, rabbits, cattle and horses are excellent fertilizers for fish ponds. Other ...
Single pond system for sustainable production of Oreochromis niloticus
(2019-12-05)
Farmers can grow mixed-sex tilapia for food and still produce their own fingerlings in a single pond. The system requires few inputs and works well on subsistence farms. Farmers using this system may no longer need to ...
Reproductive biology of Oreochromis niloticus
(2019-12-05)
Oreochromis niloticus are native to most major Northern and Central African river systems and have been distributed widely throughout the tropical world. The number of dorsal fin rays and dorsal spines and the presence of ...
Transporting fish
(2019-12-05)
Transporting fish is a very important part of fish culture. Fry and fingerlings must be transported from hatchery to pond for stocking. Brood fish are sometimes transported into the hatchery to spawn. It may even be necessary ...
Introduction to intensive cage culture of warmwater fish
(2019-12-05)
Cage culture of fish is a method of raising fish in containers enclosed on all sides and bottom by materials that hold the fish inside while permitting water exchange and waste removal into the surrounding water. Cages are ...
Introduction to water harvesting
(2019-12-05)
Throughout history, man has been dependent on an adequate water supply for his food, security and well being. Water is a universal need and is considered the principal limiting factor for human life. Destruction of natural ...
Introduction to polyculture of fish
(2019-12-05)
Polyculture is the practice of culturing more than one species of aquatic organims in the same pond. The motivating principle is that fish production in ponds may be maximized by raising a combination of species having ...
Eliminating unwanted fish and harmful insects from fish ponds
(2019-12-05)
Poisons or "toxicants" are used to eliminate unwanted fish, insects and other harmful organisms from a pond. A wide variety of poisons is available. This manual describes some which are commonly used.
Introduction to Oreochromis niloticus fingerling production systems
(2019-12-05)
Fish culture is an important component of many rural development projects in areas suffering from protein shortages. Oreochromis niloticus is often chosen for its good cultural characteristics. However, an adequate supply ...
Introduction to tilapia culture
(2019-12-05)
Tilapia are native to Africa, but have been introduced in many countries around the world. They are disease-resistant, reproduce easily, eat a wide variety of foods and tolerate poor water quality with low dissolved oxygen ...