Lastly, on Wednesday the Daily Mail ran with the scare headline "Swimming too often in chlorinated water 'could increase risk of developing bladder cancer', claim scientists".
When inflated, the bladder serves as a natural buoyancy aid, keeping the fish upright in the water.
当鱼鳔膨胀时，会增加天然浮力助，帮助鱼类在水中保持直立姿势。
3
When filling the system with water, open valves to tank to ensure any water or air remaining in the bladder from factory testing is displaced prior to placing the tank in operation.