<em>Bony fishes</em> are the ones with an endoskeleton made up of bones. If we consider the internal anatomy of a bony fish, then they have various parts such as the swim bladder, brain, heart, kidney, intestine, stomach and so on.
The parts labeled in the diagram are swim bladder, brain, and heart.
<em>The swim bladder</em> (also known as air bladder) is sac-like structure filled with air which provides buoyancy to the fish.
<em>Location:</em> Above the viscera.
2.<em>The heart</em> is a muscular organ which functions to pump the blood in the entire body.
<em>Location</em>: Central.
3<em>.The brain</em> is the control center of the fish nervous system.
<em>Location</em>: Upper part of the head covered by the skull.
