 Its range has also significantly reduced in New Jersey, particularly in the northern and central parts of the state but it remains reasonable common and widespread in the Pinelands.In New Jesrey the decile is possibly a result of a number of reasons including land use and habitat changes and the introduction of non-native fish which predate on the mud sunfish and in this state it has been recommended that it be classified as a species of special concern.It has been extirpated from Pennsylvania.