Oxygen filled plastic live fish bags are functional packaging products designed specifically for the transportation and temporary storage of live fish. Their core advantage lies in creating a temporary "aquatic environment" through sealing and oxygenation, maximizing the survival rate of live fish after they are separated from the original water body. They are widely used in aquaculture, fishery circulation, ornamental fish trading and other scenarios.
1. Basic: High-Pressure Polyethylene (PE) Single-Layer Film
Made from food-grade high-pressure PE, this material offers excellent flexibility and transparency. The flexibility prevents breakage from squeezing and collisions during transport, while the transparency allows for easy observation of the fish's condition (e.g., oxygen deprivation and damage). Furthermore, the material is non-toxic and will not chemically react with the water or the fish, ensuring the quality of the live fish (especially suitable for edible and ornamental fish). The thickness typically ranges from 0.08mm to 0.15mm, making it suitable for short-distance transport of small fish (such as ornamental fish fry and small edible fish). 2. Upgraded Version: Multi-layer Composite PE Film
For long-distance and heavy-duty transport, this film utilizes a "PE + reinforcement layer" composite structure (e.g., PE/LLDPE linear polyethylene composite). This film adds a puncture-resistant and stretch-resistant reinforcement layer to the base PE material:
Puncture Resistance: Resists scratches from fish fins and scales, as well as minor impurities (such as pebbles and aquatic plant stems) that enter during transport, preventing bag breakage and air leaks.
Stretch Resistance: After oxygenation, the bag can expand to 2-3 times its original volume while maintaining structural stability and resisting cracking due to excessive pressure. Available in thicknesses ranging from 0.15mm to 0.3mm, this film is suitable for transporting medium-to-large edible fish (such as grass carp and sea bass) over long distances and across regions.
01. Pour water into the oxygen bag (make sure to leave enough room for oxygen).
02. Add the fish.
03. Seal the bag with a heat sealer.
04. Inject oxygen until fully filled.
1. Bag Opening: Convenient Oxygenation + Reliable Sealing
Most bags feature a widened flat opening (2-3cm wider than the bag body). This not only facilitates insertion of the oxygenation tube (no need to forcefully hold the bag open), but also allows for multiple foldings (or the use of rubber bands or clips) when sealing, reducing the risk of leaks. Some high-end models feature anti-slip grooves on the inside of the bag opening, providing increased friction and a longer-lasting seal.
2. Bottom: Enhanced Stability and Capacity
Most bags feature a square bottom with four corners (a few have rounded bottoms). When unfolded, the bottom provides a flat support, allowing for stable placement in transport boxes and buckets, preventing the bag from tipping over and spilling. Furthermore, the square bottom design provides 15%-20% more internal space than a standard flat bottom, accommodating more water and live fish while minimizing fish crowding (especially suitable for packing multiple fish together). 3. Bag: Scratch-Resistant + Easy to Observe
The bag surface often undergoes an anti-fog treatment. Even with large temperature differences (such as moisture inside the bag during summer transport), fogging is prevented, maintaining transparency. This allows for real-time monitoring of fish activity (e.g., whether the fish are floating or swimming abnormally). Some products also feature a "maximum oxygenation mark" printed on the bag to prevent over-oxygenation, which could lead to bag rupture.
1.Double-layer thickness: Thickened material resists breakage and offers excellent resistance to pressure and wear.
2.New material: Brand-new food-safe material, exceptionally tough and odorless, ensuring safe use.
3.Strong load-bearing capacity and exceptional pressure resistance: Available in a variety of sizes and customizable options, this product mitigates damage to fish caused by rough transportation.
4.Easy to carry: The handle is convenient and durable, making it lightweight and easy to carry.
1. Oxygenation Ratio: The recommended ratio of water to oxygen in the bag is 1:1.5-2. Avoid excessive oxygen, which may cause the bag to bulge and burst, or insufficient oxygen, which may cause oxygen deprivation to the fish. After oxygenation, pinch the bag opening tightly to release excess air and reseal.
2. Temperature Control: Avoid direct sunlight in the summer (use an insulated box or ice packs to reduce the temperature), and avoid freezing and cracking in the winter (wrap with insulation). Keep temperature fluctuations within ±5°C to minimize stress on the fish.
3. Avoid Crushing: During transportation, place the oxygen bag in a rigid container (such as a cardboard box or plastic box). Avoid stacking heavy items to prevent the bag from breaking. A soft cloth can be placed inside the container to reduce impact during bumps. 4. Timely handling: Upon arrival at the destination, live fish must be transferred to a stable water body (such as a fish tank or pond) as soon as possible, and the oxygen bag must be placed in the target water body to "overheat" (let the water temperature in the bag be consistent with the target water temperature for about 15-30 minutes), and then the bag should be opened to release the fish to avoid fish death due to excessive temperature differences.
