copula - an equating verb (such as `be' or `become') that links the subject with the complement of a sentence. copulative, linking verb. verb - a content word that denotes an action, occurrence, or state of existence.
Different species of crabs eat different foods. Depending on the species, they may eat plankton, worms, shrimps, prawns and other shellfish, and they scavenge for animal and/or plant remains. 1  They are detrivores. 2  They will consume animal as well as plant matter (algae, etc.).
Fiddler crab's diet[change | change source] The fiddler crab eats by first opening its mouth, then using its maxillipeds (a part of its mouth), it scoops in a small amount of mud or sand, depending on where it lives.