tankfish
nounUK /ˈtæŋkfɪʃ/
US /ˈtæŋkfɪʃ/
A tankfish is a fish that lives in a tank of water.
The little tankfish swam around its glass home.
OTHER MEANINGS
2. A fish kept in a home aquarium rather than in the wild.
She feeds her tankfish every morning before school.
3. A fish raised in a storage tank on a fish farm.
The farm's tankfish are checked for health each week.
4. A soldier's nickname for a fish seen swimming near a military tank.
The crew laughed at the tankfish circling their vehicle.