Ontario Field Herpetologists. Whitford, W. G., and A. Vinegar. Homing, survivorship, and overwintering of larvae in Spotted Salamanders, Ambystoma maculatum. Mudpuppy - Necturus maculosus Distribution Found along the edge of the Great Lakes and adjacent waterways. Home Range Completely aquatic, lives in rivers, major creeks, some lakes.
Juveniles feed mainly on insects and their larvae.
Females will stay with the eggs until they hatch. Eggs will hatch in 6-8 weeks in general. More often found in pools than riffles, likely because of available cover rather than depth. May favour human alterations such as bridges which provide extra cover for them. Siltation has been identified as being a problem, likely because of covering up nests.