One particular feature found in bony fishes but is absent in cartilaginous fishes is

Name: One particular feature found in bony fishes but is absent in cartilaginous fishes is
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Bony fishes have a swim bladder, an internal gas-filled organ that helps to control their buoyancy, allowing them to maintain their position in the water column without expending energy. Cartilaginous fishes, such as sharks and rays, lack this feature and must swim continuously to avoid sinking.

One Particular Feature Found in Bony Fishes but Is Absent