Predicted to enable Wnt-protein binding activity and signaling receptor binding activity. Acts upstream of or within positive regulation of fat cell differentiation. Predicted to be active in cell surface and extracellular region. Is expressed in several structures, including alimentary system; genitourinary system; limb; nervous system; and sensory organ. Human ortholog(s) of this gene implicated in breast cancer; renal cell carcinoma; and urinary bladder cancer. Orthologous to human WIF1 (WNT inhibitory factor 1). [provided by Alliance of Genome Resources, Apr 2022]