Enables mRNA 3'-UTR binding activity. Involved in several processes, including adult locomotory behavior; posttranscriptional regulation of gene expression; and spermatogenesis. Acts upstream of or within posttranscriptional regulation of gene expression. Located in cytoplasm. Is expressed in several structures, including central nervous system; intestine; olfactory epithelium; retina; and testis. Human ortholog(s) of this gene implicated in cerebellar ataxia type 47. Orthologous to human PUM1 (pumilio RNA binding family member 1). [provided by Alliance of Genome Resources, Apr 2022]