Enables mRNA 3'-UTR binding activity. Acts upstream of or within neuromuscular process controlling balance; regulation of alternative mRNA splicing, via spliceosome; and regulation of skeletal muscle cell differentiation. Located in cytoplasm and nucleus. Is expressed in central nervous system; cranial nerve; heart; peripheral nervous system ganglion; and retina. Orthologous to human RBFOX1 (RNA binding fox-1 homolog 1). [provided by Alliance of Genome Resources, Apr 2022]