Article Correctness Is Author's Responsibility: Freshwater find: Genetic advantage allows some marine fish to colonize freshwater habitats

(Research Organization of Information and Systems) Fishes are present in not only marine but also freshwater environments. However, only few fish lineages could colonize freshwater habitats. What enable some lineages to colonize freshwater? Dr. Asano Ishikawa and Dr. Jun Kitano at the National Institute of Genetics, Japan, collaborated with international researchers to answer this question. They found that Fatty acid desaturase 2 (Fads2) is a key gene important for freshwater colonization in fishes.