Multiple Choice
If a ray-finned fish is to both hover (remain stationary) in the water column and ventilate its gills effectively, then what other structure besides its swim bladder will it use?
A) its heart
B) its pectoral fins
C) its lateral line system
D) its caudal (tail) fin
E) its opercula
Correct Answer:
Verified
Correct Answer:
Verified
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