The Balloon Lumpfish, a species of lumpfish native to the Northwest Pacific. This fish has modified pelvic fins, which have evolved into adhesive discs (located ventrally, behind the pectoral fins); it uses these discs to adhere to surfaces.

The Balloon Lumpfish, a species of lumpfish native to the Northwest Pacific. This fish has modified pelvic fins, which have evolved into adhesive discs (located ventrally, behind the pectoral fins); it uses these discs to adhere to surfaces.