■How to use■ ● Fill the fish with water and close the mouth with rubber bands to prevent water from leaking out as much as possible. Can also be closed using a sealing fixture. Depending on the type and size of the fish, water temperature, etc., it is possible to keep the fish alive for several days; Features: When oxygen passes through the surface of the bag, the carbon dioxide is extracted out of the bag. (Oxygen supply is endless) ● No need to inflate air during transport, taking up much space. Since there is no air space, fish will feel stressed and jumping off and scratching. High safety (High concentration of oxygen filling is highly flammable and dangerous. Caution: Please use for small fish, shrimp, small aquatic creatures, aquatic herbs, etc. Please do not use for medium and large fish as it may tear the bag. Do not use on creatures with thorns or scissors.