The proposed names for the six teleost RFL are given along with the nomenclature used for the orthologous genes in humans, and the nomenclature proposed by Park et al. (2008) and Wilkinson et al. (2005) in Takifugu rubripes and Danio rerio for teleost relaxin family genes. Park et al. (2008) propose that teleosts do not have an insl3 orthologue. They suggest that insl3 adopted its role in mammals after the divergence of Amphibia, and refer to the ancestral insl3 locus in amphibians as RFLCII.