frogfish

/ˈfrɑɡˌfɪʃ/
noun
  1. A type of fish that lives in warm seas and looks like a frog, with a wide mouth and the ability to change color.
    • Divers often spot a frogfish because it blends perfectly with the ocean floor.
    • This frogfish uses a special lure on its head to attract small fish.
    • The frogfish sat motionless on the coral, waiting for prey to swim by.