These tiny fish are a happy sight for divers or tide pool explorers due to their unusual lifestyle and endearing appearance. The lumpsucker is so called because its pelvic fins are adapted to act like a suction cup which they use to cling to rocks, kelp, and other stable surfaces. These suction cups prevent the lumpsucker from being swept away by the current. Unlike many other fish, the lumpsucker has armored plating instead of scales.
This striking little fish is found in many waters around the world and there are many different species of lumpsucker.