bream is a herbivorous fish. The main food of fingerlings and adult fish is aquatic vascular plants such as Sophora alopecuroides, Haematococcus verticillata, POTAMOGETON crispus, etc. They also like to eat terrestrial gramineous plants and vegetable leaves, and they can also eat some lake bottom plant debris and a small amount of zooplankton, so their feeding range is wide. Feeding began in April and continued until November, with the largest intake in June-October.
growth
bream is a medium-sized fish, which grows rapidly, with the fastest growth at the age of 1-2. Under the condition of abundant aquatic plants, the weight of fish can reach 1-2 grams in general; The weight of the second-instar fish can reach 3-5 grams, and then the growth rate will gradually slow down, and the largest individual can reach 3-5 kilograms.
Breeding mode
The spawning period is May-June, when pearls appear on both sexes. The bream generally reaches sexual maturity at 2-3 years old, and the minimum age of sexual maturity is 2 years old. The average mature female weighs 45 grams; The male fish weighs 4 grams. The spawning period is May-June, and most of them spawn at night. The optimum water temperature for spawning is 2-29℃, and the requirements for water flow are not strict. Eggs are slightly sticky, light yellow and adhere to aquatic plants or other objects, so their spawning grounds are mostly in shallow water and grassy places.
main value
medicinal use: bream has the effects of tonifying deficiency, invigorating spleen, nourishing blood, expelling wind and invigorating stomach, and can prevent anemia, hypoglycemia, hypertension and arteriosclerosis.
Suitable crowd: it can be eaten by ordinary people, and it is suitable for people with anemia, physical weakness, malnutrition and no appetite.
literature records: Tang and Meng Wei: people suffering from malnutrition and dysentery are not allowed to eat. Materia Medica for Dietotherapy: Silkworm carp can suppress stomach qi, benefit the five internal organs, and eat it with mustard seed sauce, which can help lung qi, remove stomach wind and eliminate grains. It is good for eating tuna, helping temper, making people eat, making soup and eating pleasant, and it is as good as crucian carp. Anyone suffering from chronic dysentery is forbidden to eat.
nutrition: the meat is delicious, fresh and tender with high fat content, and the fat content in the viscera is even higher. Each hundred grams contains 21. mg of protein, 6.9-8. g of fat, 92 kilocalories, 12 mg of calcium, 165 mg of phosphorus and 1.1 mg of iron.