is a specific kind of: acanthopterygian, spiny-finned fish.

is a broader term that covers: lingcod, Ophiodon elongatus | scorpaenid, scorpaenid fish | sculpin | Cyclopterus lumpus, lumpfish | Liparis liparis, sea snail, seasnail, snailfish | poacher, sea poacher, sea poker | greenling | flathead | gurnard | butterflyfish, flying gurnard, flying robin.

is a member of: Scorpaenoidea, suborder Scorpaenoidea.