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How to Safely Transport Live Fish? A Full Breakdown of Practical Methods

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1. Sealed transport: Sealed transport places the fish and water in a sealed, oxygen-filled container for transport. Its characteristics are small volume and easy portability; for general adult fish transport, within 8 hours there is no need to change the water midway, the seal is tight, and the survival rate is high. A single oxygen fill can keep fry alive in the container for more than 20 hours, and it is even more convenient for long-distance transport of large quantities of fry and fingerlings. Methods such as oxygen-filled sealed transport in plastic bags and oxygen-filled sealed transport in plastic buckets can be used. 1. Oxygen-filled sealed transport in plastic bags: Fill the plastic bag with clean clear water, with the water volume accounting for 1/3 of the bag's total capacity

1. Sealed transport: Sealed transport places the fish and water in a sealed, oxygen-filled container for transport. Its characteristics are small volume and easy portability; for general adult fish transport, within 8 hours there is no need to change the water midway, the seal is tight, and the survival rate is high. A single oxygen fill can keep fry alive in the container for more than 20 hours, and it is even more convenient for long-distance transport of large quantities of fry and fingerlings. Methods such as oxygen-filled sealed transport in plastic bags and oxygen-filled sealed transport in plastic buckets can be used.

1. Oxygen-filled sealed transport in plastic bags: Fill the plastic bag with clean clear water, with the water volume accounting for 1/3 of the bag's total capacity, then load an appropriate amount of fry or fingerlings according to plan. When transporting large-size fingerlings and adult fish, add penicillin powder (60,000 units per 10 kg), expel the air from the bag and fill it with sufficient oxygen.

2. Oxygen-filled sealed transport in plastic buckets: Its advantages are that it is not easily damaged, requires no additional packaging, and is convenient to load and unload and can be stacked. The plastic bucket is fitted with water inlet and outlet openings and a gas injection and vent hole. When in use, fill with water to 1/3-1/2; a plastic bucket with a volume of 25 liters can hold 80,000-100,000 fry. If 50,000-100,000 units of penicillin and streptomycin powder are added to the bucket and then oxygen is filled, the transport time can be within 20 hours, and the survival rate can reach above 95%.

2. Open transport: Mainly uses canvas boxes (buckets) for transport. The canvas box (bucket) is supported around its perimeter by an iron frame or wooden frame, with a volume of about 1 cubic meter. When in use, fill with water to 3/4 of capacity. At a water temperature of 20-25°C, each box can hold 300,000-350,000 fry, or 20,000-25,000 summer fingerlings; at a water temperature of 15°C, it can hold 3,000-4,000 fingerlings 10 cm long. During transport, oxygen must be continuously bubbled in or the water must be agitated with a splashing paddle to increase the dissolved oxygen content in the water. If the fish are found gasping at the surface, change the water promptly.

For long-distance transport of fry, feeding is required along the way. Generally, 2 hours after changing the water, feed half a cooked egg yolk per box; after 3 hours, siphon out the sediment to avoid water quality changes causing fry death. If changing water is difficult, methods such as splashing, aeration, and sprinkling water can be used to increase oxygen. Aeration time should not be too long, limited to the point where the fish are not gasping at the surface. If the oxygen supply time is too long, the fry will swim against the current, consuming too much energy, which can also easily cause death.

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