well it kind of hard to explain since they are sea animals they can swim for there life but if they die they will float.
Fish do not normally "float around" they swim. If your fish is floating/sinking then it is probably dead.
Fish body is of boat shape to balance itself in the water nature have given swimming bladders for fish.
enables the fish to maintain its depth without floating upward or sinking.
When a fish dies, its body becomes heavier due to the gases produced during decomposition. This causes the fish to sink to the bottom of the water instead of floating to the surface like live fish.
You want to make floating pellet feed for your fish farm. I have all things to make fish meal but do not know how do it.
when they are floating on the water
If the fish is actually 'floating' rather than the fish has simply positioned itself at the surface of the water as they normally do there may well be something wrong. Check water quality daily and replace at least 10% every day if you want healthy fish.
Fish have evolved to breathe in the water.
Fish have an gas-filled, internal swim bladder, whose buoyancy they regulate to keep from sinking or rising in the water.
Your fish may be sinking due to a swim bladder disorder, which affects its ability to control buoyancy. This can be caused by overfeeding, poor water quality, or a bacterial infection. Consulting a veterinarian or fish expert can help diagnose and treat the issue.
To keep the bait from floating on the surface of the water.
A fish boiler is a hous boiler that stores fish instead of water.