How to transport fish species safely in spring

Spring is the season to put fry and fingerling, and the transportation of fry and fingerling in different places has become an important link in shallow water culture. Transportation should be safe and efficient, and the survival rate of transportation should be guaranteed and improved.

Fish species selection should choose fish back, tail meat thick, healthy body, bright color, scales, fins intact, body surface without scars and parasites, swimming actively in the cage, strong water resistance, concentrated in a box, head down, tail up to grab water species.

Transportation of seedlings

Plastic bag for oxygenated transport of plastic fry bag specifications of 70 cm x 40 cm. When the water temperature is 20℃~25℃, each bag can transport 80,000 ~ 100,000 fry, 5000 ~7000 black fry and 1200 ~1500 summer flowers; or 600 ~800 fish species with a length of 5 cm ~7 cm and 300 ~500 fish species with a length of 7 cm ~8 cm, and the survival rate can be guaranteed to reach 90% within 24 hours.

When the open transportation temperature of canvas basket is about 20℃, generally each basket (0.4 cubic meters ~0.5 cubic meters) can hold 200,000 ~ 300,000 fry, 10,000 black fry, 14,000 ~ 18,000 summer flowers; or hold 8 cm ~10 cm long fish species 0.3 thousand ~0.4 thousand. If there is oxygen, the density can be increased to 40%~50%.

Canvas basket lined with plastic bag for oxygenated transportation In the canvas basket lined with a large plastic bag, bag height for the basket height more than twice. Fill the basket with water to half the height, then fill the fish, squeeze out the air in the basket, re-oxygenate, tighten the bag mouth for transportation. The density of fish is 2.5 times that of open transport.

Precautions for transporting seedlings Make a careful transportation plan before transportation; prepare tools and drugs for loading and unloading, transportation, disinfection, and disinfected ponds; prepare oxygenated equipment. Transportation density should be determined comprehensively according to fish species, specifications, water temperature, water quality, transportation time, transportation methods and oxygen supply equipment. The weight ratio of fish species to water body is 1∶4~1∶5. Choose sunny days with cooler temperatures for transporting species. 2 ~3 days before departure should stop eating, to pull the net fish dense 2 ~3 times. Fish species should be temporarily cultured in temporary culture boxes 2 hours to 3 hours before shipment. Strictly sift fish species with sieve, remove wild fish, ensure consistent specifications. Always observe the dynamics of fish during transportation and adjust oxygen content. Generally, the water is changed every 5 to 8 hours, and the old water is drained to about one-third before new water is injected. Once the fish is found to be anoxic, it should be oxygenated in time. After the fish species arrived, they should be "human fish" and "water fish". Fish should be soaked in medicine before entering the pond.