Question 1: What do the very small fish in small streams in nature eat? Mosquito larvae, snail eggs, shrimp seedlings, rotifers, paramecium, green algae, etc., there are so many things to eat.

Question 2: What do the small fish living in the creek eat? Big fish eat small fish, small fish eat shrimps

Question 3: What do small river fish eat? Rotifers and red worms. . . Microorganisms in water. . . Small river fish are also omnivorous. Eat a lot of things.

Question 4: What does creek grouper like to eat? Freshwater grouper (Cichlasoma managnense), native to Nicaragua in Central America, belongs to the cichlid family. Introduced into Taiwan Province of my country in 1988, it is a common freshwater culture species in southern Taiwan Province. Introduced to Jinan Freshwater Aquaculture Research Institute in 1999. It grows fast, tolerates low oxygen, has strong disease resistance, and has beautiful appearance, delicious meat, and rich nutrition. It can be used as both a commercial fish and an ornamental fish. It is a species worth promoting.

Freshwater grouper is one winter old and can lay eggs weighing more than 100 grams. The spawning habits are the same as those of tilapia. They will dig many nests for laying eggs at the bottom of the pond (the cement pond bottom will lay eggs directly on the bottom of the pond). Generally, eggs can be laid above 20℃. After spawning, the female fish mainly guards the fertilized eggs, and the male fish will guard them together when they emerge. After the eggs are fertilized, the female fish mainly protects the fertilized eggs, and the male fish will also protect them cooperatively. The fertilized eggs are dark yellow-green in color, opaque and sticky, and are scattered and arranged on the bottom of the pond with little overlap. The larvae can hatch in 48 hours at a water temperature of 26 to 29°C. The total length of newly hatched larvae is 0.58 to 0.60 cm. They cluster at the bottom of the pond and move continuously. When the water temperature is 26 to 28°C, the yolk sac disappears on the 6th day after hatching. The larvae swim to the middle and upper water layers and no longer cluster at the bottom of the pond. . At this time, you can use the fry net to pull it out and enter the fry culture. Therefore, the broodstock pond is pulled with a net every 6 to 8 days. The fish is very carnivorous in the fry stage. Individuals are very different and will kill each other. Moreover, the parent fish may eat the fry. Therefore, it must be cultured in multiple ponds at different levels.

Freshwater grouper seed cultivation is mainly carried out from the following aspects:

1. Breeding tank requirements

1. Land cultivation

Because freshwater grouper fry have the habit of covering the wall, the uneven bottom and walls of the earthen pond have a concealing effect, so the area can be slightly larger, but generally no more than 1 mu is appropriate. The water depth is 1.0 to 1.5 meters, and a few aquatic plants can be planted in the pool (both bottom and surface aquatic plants are acceptable, such as Vallisneria, water peanut, water hyacinth, etc.).

2. Cement pool cultivation

The area is 30 to 80 meters 2 and the water depth is about 1.2 meters. You can choose a square or circular pond, which requires easy drainage and irrigation without dead corners.

2. Clear the pond water and test the water

Before stocking the fry, drain the pond water and use quicklime to thoroughly clean and disinfect the pond. Add water 2 to 3 days after clearing the pond. When adding water, use 40 mesh Silk screen filter to prevent enemies from entering the breeding tank. Larvae can be stocked 7 days after adding water to the clear pond. Test the water before stocking. Before releasing the seedlings, add 200 to 250 kilograms of fermented organic fertilizer per acre to cultivate zooplankton, so that the fry can eat natural bait when they enter the pond.

3. Determine the stocking density

The stocking specifications in the same pond should be neat and consistent in size. The stocking density is generally about 100 tail/m2.

4. Feed

1. Larval fish

The feed for the larvae just coming out of the pond is mainly zooplankton. At this time, fertilizer should be applied according to the water color to cultivate rotifers, water fleas and other zooplankton. Either organic fertilizer or inorganic fertilizer can be applied to keep the transparency around 25 cm. More than 1 cm can be fed with soy milk. After 15 to 20 days of cultivation, the fry will reach more than 2 cm.

2. Inch fish

When freshwater grouper fry grow to more than 2 cm, their feeding habits begin to change. At this time, they should be fed at fixed points. You can feed surimi, earthworms, fly maggots, etc. I feed dry matter nematodes and they grow faster. After 3 to 5 days, it can be fed with artificial feed. Later, the proportion of artificial compound feed will be gradually increased until all artificial compound feed is used. The daily feeding amount is about 20% of the fish body weight, and the feeding is fed three times a day.

3. Artificial compound feed

The protein content of artificial compound feed is 35% to 40%, animal protein should be more than 25%, and other plant protein raw materials can be added. Generally, the bait coefficient can reach between 0.8 and 1.2.

5. Daily management

1. Timely separation and nourishment

Fry have the habit of eating big ones and killing each other, so when there is a big difference in growth specifications It should be screened in time and graded and nourished. Seeds in the same pond are required to have the same specifications so as not to affect the survival rate of the fry.

2. Adjust water quality

During the fry cultivation process, due to fertilization and feeding, the remaining fecal residue and bait are most likely to deteriorate the water quality. For this reason, the cement pond should be used every 3 to 5 days. Change the water once, and the amount of water each time should be enough to drain all the sewage from the bottom of the pool; the land should change 10 to 20 centimeters of water every week.

3. Disinfection

Disinfection should be carried out after sifting through the net. You can soak the fish in 5% salt water for 15 to 20 minutes, or you can spray halogen disinfectant in the whole tank.

4. Patrol the pond

Observe the fish’s feeding, activities, water color changes, etc., so as to adjust the feeding amount in time and do a good job in preventing and controlling fish diseases.

After one month of cultivation, the freshwater grouper can be grown in the pond when it grows to about 10 centimeters. After 5 to 7 months of cultivation, it can reach 300 to 400 grams. ...>>

Question 5: What should I feed the small fish caught in the stream? Generally, water worms are enough, but less red worms can’t be fed to the fish in the stream. Oxygen Keep the oxygen sufficient

Question 6: What do the groupers caught in the creek eat? Shrimp, red worms, nematodes, larvae and water fleas can all be fed to the grouper.

Question 7: If you catch small fish in a stream and raise them at home, what do the fish eat (things you have at home) millet grains, steamed bun dregs?

Question 8: From one fish to the other, they are all What do the small fish fished out of the muddy creek eat? The mud may contain aquatic weed eggs and the like