Finicky fishes will often refuse dry foods, as well as certain carnivores that require live prey to illicite a feeding response. There are far too many to list here.
beecause they wouldnt be able to breathe. Plus they have gills to breathe underwater,
Jawless fishes are voracious feeders while cartilaginous fishes are predators with a various diet.
whale haunt and feed themselves. they feed at small fishes and eat them
yes they can but on small fishes
Parrot fishes are omnivores, they are always hungry and will feed on almost anything!
That depends on what kind of fish you have. Some people feel dry food, other prefer frozen food such as mysis shrimp. Some marine fish, such as tangs, eat plants. Many feed them dried nori.
Many fish have no teeth and those who do can not bite and chew as we do. It is important that the fish be able to swallow their food whole.
lobe-finned fishes and two of them are the lungfishes and the coelacanths but mostly the LOBE-FINNED FISHES
Ocean Sunfish MAINLY feed on jellyfish...But also feed on other SMALL fishes.
Viperfish feed primarily on crustaceans and small fish.
Butterfly fish eat certain types of coral.
Anytime but just don't overfeed your fish