cleanerfish
nounUK /ˈkliːnəfɪʃ/
US /ˈklinərfɪʃ/
A cleanerfish is a small fish that eats tiny bugs and old skin off bigger fish to keep them clean.
The little cleanerfish swam right into the big fish's mouth to clean its teeth.
OTHER MEANINGS
2. Any fish that removes parasites and dead skin from other sea animals.
Many cleanerfish set up cleaning stations on the coral reef.
3. A person or business that cleans up messes left by others.
The new manager was a cleanerfish, fixing the problems the last team left behind.
4. A small fish used in fish farms to control lice on salmon.
The farm added cleanerfish to the pens to keep the salmon healthy.