A limbless cold- blooded Vertebrate animal with gills and fins and living wholly in water. In internal resources of Bangladesh, 260 Species of native and 12 Species of foreign fishes are seen. In the same way , there are 475 species of fishes in seaborne treasure fish culture and fisheries got . Fish culture and fisheries got a momentum in this country after the introduction of induced breeding of carps with pituitary extract in 1967.Once the major carps were the target species,but now many exotic fishes are cultured in ponds an lakes. Of the total annual fish production about 307. Comes from the culture sector and the remaining 70% comes from the inland and marine capture sector. In internal resources the fishes that are commonly seen are Grass carp, Big head carp, Common carp, Tilapia, Catfish, Phai pangs Sorpunti, Mullets (Bata) Chilta, Bual ,Catla, Rui, Shot, Taki, Gojal, etc. Vhuri, Datina, Vetki. Pupechanda, (Pomfrets) Siton, Lakka are the fishes of oceanic treasuri in Bangladesh.
In Bangladesh , there are 24 species of shrimp in internal fresh-water resources and 36 species of shrimp in oceanic resources. Among them Lobster, Brown shrimp, white shrimp, pink shrimp are main Lobster is culture in fresh water and while shrimp and brown shrimp and culture in salt water.
Accommodation/ Resources :
The total Resources In Bangladesh can be classification 3 Ports. Fish , Shrimp and other aquatics live in these Resources . These Resources in Bangladesh regarding their geographical and natural condition, are parted in such way such as.
Inland closed Water Resources :
The total measurement of inland closed water resources in 2,92,378 hector including ponds, canals, coastal shrimp are a etc. Among them the are a of 1,42000 ponds is 1,46890 hector.
Inland free resources :
The total quantity of inland free resources is 80,47,316 hector, marshy land/ swamp is 1,14161 hector and damped land is 28,32,772 hector.
Ooceanic Resources :
In the southern part of Bangladesh , the covering of oceanic Resource is 1,66,070,00 hector.
Benefits of Fisheries, collection and Marketing :
A remarkable part of the number of population is restated to it. Not , trotter , Boat , Many types of instrument employed in collection fish-are our asset.
Different Fish Farming System :
Java Barb ( Rajputi)
Farming System of Rajputi ( Java Barb) :
Java Barb is a rapid growth full foreign species. There are some characteristics of it regarding it's Farming system such as ,,,
* Its possible to form /cultivate it in small and shallow seasonal ponds and canals or other resources.
* In paddy fedlds it can be farmed
* It grows rapidly and becomes appropriate to be sold within 4-5 month
Pond Selection :
One should select pond with mixed soil, the area of 10-25 per hundred. It's depth is must to be 1-1.5 meter.
Preparing pond :
It is very important to prepare the the particular pond properly to make a hopeful benefit from fisheries. Regarding all the aspects and pants lime water, soil ,etc.
Pond should be made ready:
It is important to salted young fishes with big size and obtaining proper quality. The fry should be of the size 6-8 c,m. Many species need periodic sorting by size, so that larger fish do not cannibalize smaller fish. With favorable water conditions, regular water change, and generous feeding, the fry should grow quickly. Cull unhealthy and deformed fish.
Equipping/ Supping Supplementary food:
The habits of taking food of various species are different. food for Rajputi (Java Barb) Is to be supplied at two times doily Rajputi Is fond of mustard-cake, rich-dust, insect larvae and small fry. Per day 2-3kg. Small fry is needed to be provided.
Using lime and fertilizer after storing :
By rising the alkalinity and hardness of water , liming serves as direct source of soluble calcium for pond food organics. To time one firstly have to do is to make the selected pond dried .Nest, to determine weather a pond needs to be timed, check total alkalinity. Collect a water sample from the several inches below the surface, making sure the sample contains no bottom sediment .
Regarding the conditions of soil and water, 25-40 kg . cow-dung or 100-150kg cock-dust or, 35kg mustard-cake is needed.
Cate hing fish and marketing :
If balanced food is provided and sufficient caring is ensured, Rajputi ( Java Barb) a obtain the weight of 150-200gm. In seasonal pond, catching fish will be finished within 6-7 month.