Coelomates.
No. they are coelomic
Hydras are acoelomates.
its a osteichthyes or other meaning of osteichthyes is bony fish
Acoelomates are animals that do not have a body cavity filled with fluid between the digestive tract and the body wall. Creatures like jellyfish (cnidarians) and flatworms (Platyhelminthes) are all acoelomates
The reproduction among organisms in Osteichthyes varies greatly, but is all sexual reproduction with separate sexes.
Other fish.
scales
coelomates
Osteichthyes are fish that have skeletons made out of bone instead of cartilage. They are usually called "bony fish".
cold blooded
ya man