Lumpfish, Cyclopterys lumpus, are famous for their cuteness, their odd shape and their large sucker disk which they use to attach to substrates. Lumpfish have however been declining since the mid-1980s, likely as a result of overexploitation, as they are targeted by fisheries where females are killed to harvest their roe. The lumpfish migrate to coastal zones to spawn, but where they go after spawning remains unknown. In fact, we have little knowledge about their biology and behavioral patterns. We therefore tagged 31 lumpfish with data storage tags on the northeast coast of Denmark, and investigated their behavior.