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"Labrax lupus (Bass), an Acanthopteryglan with anterior spinous and posterior soft dorsal fins." — Encyclopedia Britannica, 1893

Bass

"Labrax lupus (Bass), an Acanthopteryglan with anterior spinous and posterior soft dorsal fins." —…

"In these the back is usually covered with spines and hairs. They generally live in deep water, and rarely approach the shore." — Goodrich, 1859

Spinous spider-crab

"In these the back is usually covered with spines and hairs. They generally live in deep water, and…

"A fin-spine; one of the unjointed and unbranched sharp bony rays of the fins, such as those the presence of which gives name to the acanthopterygian fishes; a spinous fin-ray, as distinguished for a soft ray." <p>Illustration of the ventral fin of the acanthopterygian fish.

One Spine on the Ventral Fin of a Bony Fish

"A fin-spine; one of the unjointed and unbranched sharp bony rays of the fins, such as those the presence…

"A fin-spine; one of the unjointed and unbranched sharp bony rays of the fins, such as those the presence of which gives name to the acanthopterygian fishes; a spinous fin-ray, as distinguished for a soft ray." <p>Illustration of the dorsal fins of the acanthopterygian fish.

Ten Spines on the Fins of a Bony Fish

"A fin-spine; one of the unjointed and unbranched sharp bony rays of the fins, such as those the presence…

"A fin-spine; one of the unjointed and unbranched sharp bony rays of the fins, such as those the presence of which gives name to the acanthopterygian fishes; a spinous fin-ray, as distinguished for a soft ray." <p>Illustration of the anal fin of the acanthopterygian fish.

Three Spines on the Anal Fin of a Bony Fish

"A fin-spine; one of the unjointed and unbranched sharp bony rays of the fins, such as those the presence…