A cell line was grown from fin tissue of lumpfish (Cyclopterus lumpus). The cells were propagated in RTO medium supplemented with NaCl at 18 °C and have a generation time of 108 h. They are fibroblast-like, contain numerous cytoplasmic granules, are susceptible to amphibian virus (LT-1), and have an average chromosome number of 2N = 50.