automatonfish
nounUK /ɔːˈtɒmətənfɪʃ/
US /ɔːˈtɑːmətənfɪʃ/
A robot fish that swims by itself.
The little automatonfish glided through the tank without any help.
OTHER MEANINGS
2. A toy fish that moves on its own when wound up.
My brother got an automatonfish that wiggles its tail in the bathtub.
3. A person who follows orders without thinking, like a fish in a school.
He just nodded along like an automatonfish at the meeting.
4. A computer program that acts like a fish in a simulation.
The game's automatonfish darted away whenever the player came near.