Little fish flipping bit children (8)

I believe the answer is:

toddlers

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'children' is the definition.
(toddler is a kind of child)

I don't understand the rest of the clue.

(Other definitions for toddlers that I've seen before include "Tots" , "They're just beginning to learn to walk" , "Small children" , "Young children" , "Ankle-biters" .)

I've seen this clue in The Independent.

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