Remora

[Sarah]

Any one of several species of fishes belonging to Echeneis,Remora, and allied genera. Called also sucking fish.

[Tina]

A slender marine fish which attaches itself to large fish by means of a sucker on top of the head. It generally feeds on the hosts external parasites.

[Vania]

A. Someone who expects everything to be given to them on a [silver platter] while they lay around doing nothing.

B. A social leech

c. Any of several marine [fishes] of the family Echeneidae, having on the head a [sucking disk] with which they attach themselves to sharks, whales

[Zipporah Schumaker]

(1) A fish that latches onto a larger fish using a sucker on its head, then [feeds] on the larger [fishs] external [parasites].
(2) A human who lives in a similar fashion.

[Jessica]

The little fish that swims behind [the big] [shark] [picking up] whats left.