Rays:

• ray_(fish) → fish.
• manta_ray → ray_(fish).
• stingray → ray_(fish).

Sharks:

• whale_shark → shark.
• thresher_shark → shark.
• goblin_shark → shark.
• greenland_shark → shark.
• frilled_shark → shark.
• leopard_shark → shark.
• bull_shark → shark.
• blue_shark → shark.
• gummy_shark → shark.
• mako_shark → shark.

Billfishes:

• billfish → fish.
• sailfish → billfish.
• marlin → billfish.
• swordfish → billfish.

Catfishes:

• eeltail_catfish → catfish.

Eels:

• moray_eel → eel.

Others:

• oarfish → fish.
• lamprey → fish.
• hagfish → fish.
• remora → fish.
• lionfish → fish.
• tuna → fish.
• sardine → fish.
• angelfish → fish.
• blobfish → fish.
• coelacanth → fish.
• carp → fish.
• leafy_seadragon → fish.¹
• salmon → fish.²