Barbules definitions

Barbules

fleshy projections from the mouth of fish such as carp and barbel.
Found on http://www.fish-uk.com/dictionary.htm

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barbules

Branchlets coming off both sides of the barbs of a feather, at right angles to the barbs and in the same plane. Adjacent barbules hook together, holding the vane intact.
Found on https://academy.allaboutbirds.org/bird-academys-a-to-z-glossary-of-bird-ter

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