Predicted to enable growth factor activity, type 1 fibroblast growth factor receptor binding activity, and type 2 fibroblast growth factor receptor binding activity. Involved in positive regulation of somitomeric trunk muscle development. Acts upstream of or within several processes, including animal organ development, determination of bilateral symmetry, and nervous system development. Located in extracellular space and lysosome. Is expressed in several structures, including germ ring, head, mesoderm, nervous system, and neural keel. Human ortholog(s) of this gene implicated in hypogonadotropic hypogonadism 6 with or without anosmia and prostate carcinoma in situ. Orthologous to human FGF8 (fibroblast growth factor 8). [provided by Alliance of Genome Resources, Apr 2022]