The question makes no sense. Objects are buoyant in a surrounding fluid; change the fluid, change their buoyancy.
bouyancy
yes, it has a small amount but it still has buoyancy.
bouyancy
The property of bouyancy is the property related to keeping objects supported in fluids.
Yes, Hence bouyancy.
Charged objects don't have an effect on neutral objects, and repel objects with like charges.
Until a pro contributes, I suggest that the purpose of the fluid filling the cavities is to prevent excess positive bouyancy, which would cause the fish to uncontrollably float to the surface. Buy having its natural bouyancy at or near neutral, the fish would then be able to adjust to positive or negative bouyancy with only small effort.j3h.
That force is bouyancy. Bouyancy is also present in a gas, but its effects are usually negligible except on objects with very low densities.
Objects with the same charge repel each other.
There will be an attractive interaction between the charged object and the neutral object.
Objects that are in the middle of water have neutral buoyancy.
The bouyancy of of a floating object is affected by ballast.