Select the set of fishes which belong to the class Osteichthyes :

The class Osteichthyes comprises all bony fishes. Members of this class share several key characteristics:

• A skeleton made primarily of bone rather than cartilage.
• Opercular (gill‑cover) bone shields covering the gills.
• Paired fins supported by bony rays (lepidotrichia).
• A swim bladder for buoyancy control.

Among the listed groups, the fishes that exhibit all of these traits are the Flying fish, Angel fish, and Fighting fish:

• Flying fish (family Exocoetidae) have a fully bony skeleton, opercular bones, and fin rays, and they are well known for their gliding ability using enlarged pectoral fins.

• Angel fish (various genera such as Pterophyllum) are classic bony teleosts with bony vertebrae, a swim bladder, and bony fin supports.

• Fighting fish (Betta splendens) are also teleost bony fishes, possessing a bony endoskeleton, opercular bones, and ray‑supported fins.

The other options contain species that are not true bony fishes:

• Saw fish, Devil fish, Cuttle‑fish, Hagfish, and Starfish belong to groups with cartilaginous or non‑vertebrate features (e.g., cartilaginous skeletons, molluscan bodies, or echinoderm symmetry) and therefore are not members of Osteichthyes.

Consequently, the correct set of fishes that belong to the class Osteichthyes is:

Flying fish, Angel fish and Fighting fish.