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They are called gas sacks.
bone
There are bony fishes and cartilaginous fishes.
operculum
it has denticles
Bony fishes have two sets of paired limbs.
Pizza?
A bony skeleton. Snappers are a member of the taxonomic group Osteichthyes (bony fish), as opposed to cartilaginous fishes (like sharks) or boneless fishes (like hagfish).
No, they are bony fishes.
Bony fishes.
Bony Fishes
cartilaginous fishes have lamelliform gills. bony fishes have filiform gills.