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BiologyJAMB UTME

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Earlier discussion

1 older comment kept for context.

Oluwaseun Adeyemi

The operculum of a bony fish is the hard bony flap covering and protecting the gills. In most fish, the rear edge of the operculum roughly marks the division between the head and the body. When an operculate fish breathes it takes in water through the mouth and passes it out through the operculum.