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“planktivorous”
planktivorous (adjective) (not comparable)
Regarding a creature that feeds on small oceanic plants or animals: Planktivorous organisms consist of most fish larvae and many pelagic animals, such as anchovies, and sponges.
This entry is located in the following units:
plankto-, plankt-, -plankton
(page 5)
vor-, vora-, -vore, -vorous, -vores, -vora, -vory
(page 13)