It's probably gasy, or flatulent. Try changing to another feed.
it stops swimming
A shark.
Then Its Hungry.
a fishy
They just swimmin about.
Of course it is! just watch it!, the ball goes into red... stops and floats out again!
it tightens around the genatils and stops flappage wilst swimming
after laying many eggs,it gets exhausted and stops for a while and again swims.
Oil gets their wings and stops them from flying or swimming, so it can be fatal.
A dolphin's shape reduces the friction it encounters when swimming greatly, but it is still exposed to friction, and as a result will slow down if it stops swimming.
Oil gets into their wings and stops them flying or swimming, so it can be fatal. The oil is very diffucult to get rid of.
Tiger sharks do not live in caves since they hunt so much (if a shark stops swimming it will die)