(Vietnam Fisheries) – Currently, the species is listed as rare in nature Goods are being overexploited, greatly endangered. Therefore, genetic conservation of rare species is Becoming urgent. Tuy nhiên, the breeding and rearing object development is still quite arduous.
Reproductive success, many fish you
The species classified as “contingent launched quarterly” his arms like a fish, blue fishbeams, fishing villages, fish and fish suddenly, the price per kg also to the million. And because of great value to the wild this species is being exploited very strong. Therefore, they become more precious and rare.
In order to develop fish farming rare, from the years 2002 – 2004 Research Institute of Aquaculture I (From Son – Bac Ninh) was forresearch and breeding success dace period (Hemibagrus guttatus) . Until now, the whole village became dotted reared bring efficiency in many localities such as Hai Duong, Vinh Phuc …
Many rare fish breeding has been successful – Photo: Hoang Hai
After the fish is a fish wheel marking his arms, fish “forward king” is also the National Center for freshwater aquatic Like North (Hai Duong) for breeding success. The test fish farming in ponds his arms water and still water ponds also bring certain success.
From the initial success, until now, many localities have been transferred to technical and production steering marking fish, fish as his arms successfully Nam Dinh, Bac Giang, Hoa Binh, Phu Tho … Besides, the same fried fish, fish have also been studied suddenly reproductive success initially in Yen Bai.
Also in the MD, the Center for An Giang seafood varieties initially for successful fish spawning reefs – rare fish species in the Mekong River not only preserve this precious species but also create new objects adopted effective for the people here.
Even more difficult
The reproductive success, many fish you is good news for farmers. But now, there are still many difficulties such as rate maturing brood low (only about 50%), percentage of fish is low … So, should enhance the rate study of breeding maturity mother during growout, fertility and survival rate during the run.
Besides, now rare fish farming commercially met many difficulties such as large investment (if cage culture), culture techniques and prevent disease is, the farmers themselves learn and grow only by traditional way is essential, so bring efficiency is not high.
On the other hand, does not produce food for the fish industry, farmers must use the home made food, fresh food to the risk of environmental pollution and risk of disease epidemics is very large ..