Enables fibroblast growth factor binding activity. Involved in adult behavior; positive regulation of ERK1 and ERK2 cascade; and positive regulation of nervous system process. Predicted to be located in extracellular region. Is expressed in several structures, including central nervous system; future prosencephalon; male reproductive gland or organ; notochord; and primitive endoderm. Orthologous to human FGFBP3 (fibroblast growth factor binding protein 3). [provided by Alliance of Genome Resources, Apr 2022]