Culture techniques of grouper in brook can grouper be cultured in fresh water

Stream grouper is a kind of grouper, it belongs to freshwater fish grouper, stream grouper usually spawn in winter, spawning habits and tilapia will dig many nests at the bottom of the pond. If there are certain requirements for water quality in breeding stream grouper, let's take a look at what we need to pay attention to in the process of raising stream grouper.

Culture techniques of grouper in Xiaoxi

1. The source of water requires pollution-free stream water, which is introduced into the pond through a channel, entering from one end of the pond and out from the other end, mainly by running water culture. The size of the pond is generally 50-100 square meters, and the water depth is about 1 meter. It is best to put some gravel in the pond so that the grouper can hide. You can also build a shed in one corner of the pond to shade the sun to avoid the strong summer light affecting the growth of grouper.

2. Artificial culture needs bait, which can be fed with shrimp or carp bait with high protein content, and the protein content is required to be more than 30%. The amount of feeding is determined according to the water temperature, fish size and weather conditions, and it is appropriate for the fish to be 80% full. Bait method: a small number of times after the total amount is determined, feeding slowly when feeding, and then after eating, because grouper do not like to look for bottom bait.

3. The daily management of water quality requires clarity, mainly running water. The sun should be shaded in time when the light is too strong in summer. Close the water intake during a rainstorm to prevent muddy water from rushing into the pond and prevent grouper from escaping.

Can grouper be cultured in fresh water?

1. Yes, freshwater grouper can grow in fresh water or in seawater with salinity below 10 ‰. The optimum temperature is between 25 and 30 ℃. When the water temperature drops to 20 ℃, the food intake decreases obviously, and when the water temperature drops to 15 ℃, the body loses balance, so the area where the pond water will drop below 15 ℃ during winter is not suitable for aquaculture. During the overwintering period, the water temperature for freshwater grouper growth is above 19 ℃. The feeding habits are partial carnivorous fishes, and the carnivorous characteristics are strong in the fry stage, mainly zooplankton.

2. Freshwater grouper can lay eggs at the age of winter, and like tilapia, they will dig many nests at the bottom of the pond. Spawning usually takes place in the afternoon, and after spawning, the fertilized eggs are mainly guarded by females, and the males also cooperate with each other, but as the embryo develops, the guard behavior becomes weaker and weaker.

3. The egg is oval, the egg color is yellowish dark green, opaque, sticky eggs, eggs scattered on the bottom of the pool, there is little overlap. The female fish weighing 140g laid about 3000 ~ 4000 eggs each time, and the larvae could be hatched after 48 hours when the fertilized eggs were fertilized at a water temperature of 26 ~ 29 ℃.

What are the producing areas of grouper?

1. Grouper is rich in nutrition, delicate and white meat, similar to chicken, known as "sea chicken". Grouper is also a kind of high-quality edible fish with low fat and high protein, which is regarded as one of the four famous fish in China by Hong Kong and Macao. The main producing areas of grouper in China are Zhejiang, Fujian, Guangdong, Guangxi, Hong Kong, Taiwan, Hainan and other places.

2. Most of them are produced along the coast of China and Nansha Islands of Xisha Islands, which are important economic fishes of large and medium-sized warm-water seafood. There are 12 species of grouper distributed along the coast of Fujian. Red grouper, salmon grouper, moire grouper and reticulated grouper are common species with high economic value.

What are the species of grouper?

1. Grouper is hermaphroditic and has the characteristics of sexual transformation. At the first sexual maturity, all the females are female, and then turn into males the next year, so there are significantly fewer males than females. There are 12 species of grouper distributed along the coast of Fujian, among which red grouper, salmon grouper, moire grouper and reticulated grouper are of high economic value and common species.

2. The colors of East Star spot are blue, red, brown and yellow, etc., with a slimmer figure and a smaller head than the general grouper. There are black pupils in the blue eyes, and the body is covered with white tiny flowers, similar to the stars in the sky, so it is called "star spot". As for the word "east", it is made in eastern China. East. The Sand Islands.

Stream grouper is also a delicacy, the taste is more delicious, its price in the market is 60-70 yuan / jin, supply exceeds demand, so stream grouper has a relatively good breeding prospects. You might as well put a few in your own pond.