clingfish
nounUK /ˈklɪŋfɪʃ/
US /ˈklɪŋfɪʃ/
A clingfish is a small fish that sticks tightly to rocks with a special sucker on its belly.
We found a clingfish holding on to a rock in the tide pool.
OTHER MEANINGS
2. Any of various small marine fishes of the family Gobiesocidae that use a suction disc to attach to surfaces.
The clingfish uses its belly disc to stay put in strong waves.
3. A person who holds on tightly to something and refuses to let go.
My little brother is a clingfish when it comes to his favorite blanket.
4. A fish that attaches itself to larger animals or boats.
The clingfish stuck to the side of the boat like glue.