Why are soft-rayed fish, such as shad, often preferred by smallmouth bass over spiny fish when both are available?

Answer

They are easier to swallow

Biologists observing the contents of bass stomachs note that soft-rayed fish are generally preferred because the absence of sharp spines makes the process of swallowing them significantly easier.

Why are soft-rayed fish, such as shad, often preferred by smallmouth bass over spiny fish when both are available?
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