Types of carp species:
Breeding methods
The best way to breed tropical fish is multi-species breeding. Because in this method, all the food levels in the pool are used and none of the food levels in the pool are left unused, in addition, in multi-species breeding, fishes have positive nutritional mutual effects (synergism) on each other. In tropical fish breeding, unlike cold water fish breeding, single-species breeding is not common and it is not economical from the economic point of view, also dual-species breeding is not common and is recommended in special regional conditions because this multi-species breeding method In any case, in the special conditions of the region where fish are raised in two species. The composition of the species should be such that they do not compete with each other for food. For this reason, silver carp can be bred with Amur and bighead carp.
Composition and density of cultivation
The composition and density of fish species in tropical fish farming depends on the conditions of the breeding area.
But in general, the following composition and density is recommended.
Fish density per hectare is 2.3 to 4 thousand pieces
50-60 silver carp
Carp 20-25%
Amur fish 15-20%
Redfish 5-10%
In addition, about ten percent of the losses during the breeding period are considered, which should be added to the pool during the cultivation of fry. According to the conditions of the region in terms of breeding time, access or lack of access to cheap hand food, the abundance or lack of pool plants and access to cheap fodder, the species composition of silver carp, carp and amur can increase up to ten percent. or decrease. The length of the tropical fish breeding period varies from 7-9 months according to the weather conditions. In areas where the length of the breeding period is short, fry with weights of more than 30-40 grams should be introduced to the pool. The fish should weigh more than from one kilogram to be marketed.
Baby Fish Disposal in Frequency Stocks and Aeration:
1- Silver carp fish 50-55%
2- Carp 20-25%
3- Amur fish 15-20%
4- Redfish 5-10%
In this case, the composition of species can decrease or increase by ten percent
Method of selecting the main species in breeding
This method is one of the methods that are used in some countries of the world to breed tropical fish. In this method, according to the conditions and facilities available in the area, one of the species is selected as the main species and the rest of the fishes are raised as secondary fishes along with it. For example, if agricultural waste products such as wheat, barley, and corn are abundant and cheap in a region, carp can be cultivated in that region as the main fish and the rest of the fish as side fish, or if the climatic conditions of the region And the number of sunny days and the length of the day are so low that you cannot expect a swimming pool with fertility. Considering the space required for feeding carp, it can be cultivated in the original way. In areas where there is abundant and cheap animal manure available, and the length of the day and the number of sunny days during the breeding period are high, and the natural fertility of the pond is optimal, it is possible to use silver carp as the main species and other fish. Used as a side dish. In the areas where the fish breeding ponds are covered with grass and aquatic plants and there is a lot of cheap fodder in the area, it is possible to breed Amur fish as the main fish. In the conditions of our country, among the above three types of fish that can be selected as the main fish, in some areas, carp can be used as the main fish. The conditions for choosing Amur fish as the main species are not suitable and it is not economical.