The 3 subspecies of the black swamp snake are so similar that it will take scale counts to differentiate them. This is a Carolina swamp snake.Three races of red-bellied swamp snakes, Seminatrix pygaea ssp., occur in the southeastern United States. They differ principally in the number of belly scales that each possesses. None are restricted to swamps, but, rather, may inhabit all but rapidly moving waters. They are especially partial to those waters that are choked with vegetation. The dense vegetational mats formed by the crowns and root systems of the beautiful and prolific, introduced water hyacinth are particularly favored. In fact (the difficulty I had in finding swamp snakes not withstanding), the spread of the troublesome water hyacinth through southeastern waterways has probably greatly benefitted swamp snake populations.

Seminatrix pygaea is an ovoviviparous species. From three to 14 young, diminutive replicas of the adults in appearance, are birthed in the late summer or early autumn.

Swamp snakes are generally thought of as difficult captives. In nature they are rather specialized denizens of a habitat that is difficult for herpetoculturists to reproduce. If kept captive in either an aquarium or with moist sphagnum as a substrate, a potentially fatal blister disease often manifests itself. If kept on a dry substrate, these snakes often experience shedding difficulties. A happy medium may take considerable effort.

The commonly listed dietary preferences of the species are also not those usually available to hobbyists. Mentioned food items include, among other things, leeches, dwarf sirens, tadpoles, and other such aquatic fare.

However, I have recently learned of one, long-term captive swamp snake that has contentedly dwelt in a small, dry, terrarium (with a water bowl), AND which feeds ravenously on newly born pink mice. Too little is known about the species as a captive for me to hypothesize whether this specimen is the exception or the norm. It might be of interest for other southeastern reptile enthusiasts to experiment with the captive care of swamp snakes, but to be ready to release their specimens back into natural habitats should they not respond quickly and satisfactorily.

Certainly the snake is sufficiently beautiful to warrant the interest of many hobbyists who have space for only a small specimen or two. Although swamp snakes may rarely attain a length of 18 inches, most are adult at from 10 to 14 inches in overall length.