Prospects of Carp fish culture:

Carp are a very satisfying fish to capture since they may grow to enormous sizes and put up thrilling fights. As a result of their regal movements and subdued personalities, carp are frequently referred to as “the queen of rivers and lakes”. Due of its ability to alter the ecological aspects of aquatic environments, the common carp is frequently referred to as a “ecological engineer”.

The common carp has a tremendous potential for expansion. Its numerous varieties and strains can grow to a weight of roughly 0.2–0.3 kg, 1-1.2 kg, and 2.5–3.5 kg within roughly 2-3, 5-7, and 10–14 months, respectively, if the water temperature is sufficient. The culture system for this fish is relatively simple, and its development rate is rapid. This freshwater fish is in high demand in the market. This fish’s spawning season in Bangladesh lasts from March to June. At 25° to 30°C, the hatching period takes 18–20 hours. In closed waters, this fish does not reproduce. When it has increased its weight from 1.5 to 2.5 kg, it takes around one to one and a half years to reach a size that is marketable.

Problems of Carp fish culture:

The majority of Bangladesh’s aquaculture production systems are extensive and expanded extensive, with a small number of semi-intensive and rarely intensive systems. Although the culture fishery accounts for about 55% of the inland fish production, it only uses a small portion of the inland water resources, at about 1%. The majority of farmers are poor and reside in rural areas, making it impossible for them to use the intensive fish production technique that necessitates a greater input supply.

The semi-intensive culture technique, which requires moderate inputs and production management based primarily on proper stocking rate and ratio and adequate manuring on a regular basis with or without supplementary feeding, should be a suitable intermediate technology for farmers in Bangladesh.

Farmers must rely primarily on expensive artificial feed while raising carp fish. Carp fish farming requires meticulous attention, and producing spawn can be challenging for growers without technical expertise. Best quality carp brood, or fry, and fingerlings are required for a strong fish output.

Through a number of steps the government should take, Bangladesh’s fish production can be increased. Additionally, the farmer should receive the appropriate knowledge from the appropriate authorities (DOF). However, the need to import machinery from outside dramatically increases the cost of the investment.

The government in Bangladesh can create the tools to make this technology accessible to all farmers. In this regard, financial help is also crucial.

Farhana Islam
Agriculturist, Researcher
Fisheries Resource Management, CVASU

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Following this mix farming method the cost of fish farming is low and the production is high. In Sherpur upazila, a farmer is earning Tk 450,000 (USD 4500) in 5 months from 50 decimal of land by cultivating Galda-carp mixed farming. Observing their success, many people are getting interested in fish farming.

Abdul Razzak, a fish farmer of Mirzapur Union, said that about Tk 100,000 (USD 1000) has been spent on Galda-carp mixed farming on 50 decimal of land with the demonstration of the upazila fisheries officer. The fish becomes marketable within 4-5 months. I have already sold fish worth Tk 400,000 (USD 4000) and expecting to sell another Tk 150,000 (USD 1500) worth of fish.

Inchanur Rahman of Shubogacha village said, I received a demonstration of freshwater shrimp – carp farming under the Rajshahi Division’s Fisheries Development Project. Besides, I have spent 100,000 (USD 1000) on shrimp farming. I have provided ready-made feed for Freshwater shrimp farming. I am expecting to earn 500,000 (USD 5000).

Local fish farmer Sohail Rana and Rakibul Islam said, we started farming with 5000 shrimp fry at a cost of Tk 200,000 (USD 2000), about 500-600 kg of freshwater shrimp can be obtained from this. Currently Galda shrimps are being sold at Tk 1000-1100 (USD 10-11) per kg in the market. I hope to make a profit of 100,000 (USD 1000) by selling my shrimps.

Farmers also said that along with shrimp feed, floating feed for carp is given in the morning and evening. For every 100 kg of fish, 3 to 4 kg of feed per day is required. Regular supply of oxygen is required to get optimum result. Galda or freshwater shrimps are not that disease prone. Apart from Sherpur, the produced shrimps will be sold in different bazaars of other areas.

Upazila Fisheries Officer Masud Rana Sarkar said that the water and weather conditions of this upazila are suitable for freshwater shrimp cultivation. Five farmers brought 25,000 PL (post larvae) from Barisal BRAC Hatchery. We are providing all kinds of support to them including the training. Although there are some challenges in shrimp farming, we can say fish farmers have been successful in Galda-carp mixed farming.

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