A study by Langille and colleagues has revealed a significant genomic division between Northeast and Northwest Atlantic lumpfish populations, a finding similar to other marine species in the same regions. The team identified a chromosomal inversion on chromosome 2, predominantly fixed in the Northwest Atlantic, which may play a role in the adaptive diversity of lumpfish. The research suggests parallel adaptive diversity in lumpfish populations due to similar environmental pressures, highlighting the need for further research for effective conservation and management of the species.