Predicted to enable RNA binding activity. Acts upstream of or within animal organ development; chordate embryonic development; and muscle cell development. Predicted to be active in cytoplasm and nucleoplasm. Is expressed in several structures, including chordo neural hinge; gonad; nervous system; pectoral fin bud; and solid lens vesicle. Used to study myotonic disease. Orthologous to human MBNL2 (muscleblind like splicing regulator 2). [provided by Alliance of Genome Resources, Apr 2022]