Which of the following is the primary function of the operculum in fish?
ARegulating buoyancy
BCovering and protecting the gillsCORRECT
CDetecting water pressure changes
DAiding in reproduction
GCEAgricultural ScienceFisheries and Forestry2023
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Why the answer is B, and why the others tempt you.
The operculum is a bony flap that covers and protects the delicate gill structures in bony fish. It also plays a role in the pumping mechanism that draws water over the gills for gaseous exchange. The lateral line detects pressure changes, while the swim bladder regulates buoyancy.
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