Bony fish or Teleosts have something called a swim bladder that can be filled with gas to give them neutral buoyancy in the water. Sharks and rays, (Chondrichthyes) are cartilaginous fish do not have swim bladders and 'fly' through the water using the lift they gain from their large pectoral fins and asymmetrical heteroceral tail. Like an aeroplane, if they stop moving they lose altitude and sink.
No sharks are not 'bony'. The skeletal makeup of sharks is cartilage. Although cartilage is dense and can be bone-like it is significantly less dense than bone.
swim bladder.
Sharks are not bony fish. They are cartilaginous fish.
No, sharks do not have an operculum. Opercula are bony plates that cover the gills of bony fish to help with breathing, but sharks breathe through gill slits located on the sides of their bodies.
Placoid scales, also known as dermal denticles, are the tooth-like scales embedded in the skin of rays and sharks. They provide protection and reduce drag when swimming.
swim bladder.
They can lay eggs but not sharks they have live kids by humping on each other.
Yes, trout are a bony fish (as opposed to cartilaginous fish, like sharks).
Sharks are from an older lineage of cartilaginous fish. Bony fish appeared afterwards.
It is larger
No. Minnows are bony fish, and sharks are Elasmobranchs.
Sharks and Rays belong to the class Chondrichthyes, the cartilaginous or non-bony fishes.