(1) Porous wood block or concrete block: The size, thickness and spacing are the same as those of porous plastic foam, but they are stacked in water and discharged from bottom to top.
(2) Porous plastic foam: several holes with a diameter of about 2 cm are drilled every 5-7 cm. The size of each plastic foam is uncertain, and the thickness should be 15-20 cm, overlapping into three dimensions and fixed. Let it float below the water, not above it.
(3) Hidden grass: aquatic plants (water hyacinth, etc. ) into the pool, floating on the water to provide shade for the loach, which can not only absorb the direct irradiation of strong ultraviolet rays on the loach in summer and hot season, but also adjust the water temperature; The developed roots of aquatic plants not only provide a good habitat for loach, but also purify the water quality and improve the overall ecological environment of aquaculture ponds. The coverage area of aquatic plants accounts for about two-thirds of the water surface.
In addition, aquatic plants can be directly put into water for soilless culture of loach, especially in large-scale culture, the production process of loach is easy to manage and operate, and the growth rate and survival rate of loach will be greatly improved.
Data expansion
Misgurnus anguillicaudatus belongs to Misgurnus anguillicaudatus. It is long and cylindrical with a flat and thin tail handle. Small head. Kissing skills. The lower mouth is horseshoe-shaped 5 pairs of whiskers (1 kiss whiskers, 2 pairs of maxillary whiskers and 2 pairs of mandibular whiskers). The eyes are small, on the side, covered by skin membrane, and there are no lower thorns. Small branchial foramen Scales are very small and deeply embedded in the skin. Side line complete. The lateral line scale is greater than 150. The swim bladder is small and wrapped in a hard bone capsule.
Morphological characteristics: long cylindrical, flat and thin tail handle. Small head. Kissing skills. The lower mouth is horseshoe-shaped 5 pairs of whiskers (1 kiss whiskers, 2 pairs of maxillary whiskers and 2 pairs of mandibular whiskers). The eyes are small, on the side, covered by skin membrane, and there are no lower thorns. The branchial foramen is small, and the branchial fissure stops at the base of pectoral fin. Scales are very small and deeply embedded in the skin. Side line complete. The lateral line scale is greater than 150. The swim bladder is small and wrapped in a hard bone capsule. The dorsal fin is short, the starting point is opposite to the ventral fin, and there are no branch fins 2 and 7. The pectoral fin is far from the ventral fin, and there is no branching fin 1, but there is branching fin 10. The ventral fin is less than the gluteal fin, and there is no branching fin 1, and the branching fin is 5-6. Whether the gluteal fin has branch fin 2 and branch fin 5. The caudal fin is round.
Habitat: Misgurnus anguillicaudatus is a benthic fish, and likes to live in still water or slow-flowing waters with mud at the bottom, such as lakes, ponds, paddy fields, ditches and reservoirs. , like neutral or slightly acidic cohesive soil. The suitable domestic water temperature is 10-32℃, and the optimal water temperature is 22-28℃. When the water temperature is lower than 10℃ or higher than 30℃, the activity of loach is obviously weakened; When the water temperature is lower than 5℃ or higher than 35℃, dive into the mud to stop activities. In winter, the loach burrows into the mud for 20-30 cm to overwinter, and comes out when the water temperature reaches 10℃ in the following spring.
Life habit: Misgurnus anguillicaudatus moves in the bottom mud or the bottom mud of water, likes to lie in the daytime and go out at night, and his vision deteriorates in a dark environment for a long time. However, tentacles and lateral lines are very sensitive and play a key role in avoiding enemies and foraging. Misgurnus anguillicaudatus not only breathes through gills, but also breathes through intestines, so it has strong tolerance to low dissolved oxygen. As long as the soil is moist, loach can survive in water-deficient environment for a long time. Misgurnus anguillicaudatus has strong adaptability to the environment, so among the fishes of Misgurnus 100, only Misgurnus anguillicaudatus has the largest number and the widest distribution.
Main value
Medicine: It can be used as medicine in the body, and has the effects of tonifying the middle energizer, tonifying the kidney, warming the spleen, eliminating dampness and eliminating jaundice, and stopping sweating. Can be used for diarrhea due to spleen deficiency, thirst quenching, night sweats and edema in children, dysuria, hemorrhoids, skin itching, etc. Compendium of Materia Medica records that Misgurnus anguillicaudatus "warms the middle warmer, benefits qi, sobers up and quenches thirst".
Edibility and nutrition: loach meat is delicate and tough, with high nutritional value. People in Southeast Asia like food very much. Misgurnus anguillicaudatus is delicious, rich in protein and contains many vitamins. The loach meat contains protein 1.8.4-20.7%, fat 2.7-2.8% and ash 1.6-2.2%. Every100g of meat contains vitamin A70IU, vitamin B130μ g, vitamin B2440 g and calcium 565438. Misgurnus anguillicaudatus contains some vitamins higher than other fish, such as vitamins A, C and B, which can improve human immunity if eaten regularly.