Enables MAP kinase tyrosine/serine/threonine phosphatase activity. Acts upstream of or within negative regulation of MAPK cascade. Located in cytoplasm. Is expressed in several structures, including alimentary system; brain; extraembryonic component; genitourinary system; and sensory organ. Orthologous to human DUSP9 (dual specificity phosphatase 9). [provided by Alliance of Genome Resources, Apr 2022]