3" - 4"
6" - 10"
the wild, they feed on snails
and insects, as well as aquatic vegetation.
Low to mid 80's
High 80's to low 90's
to mid 70's
and Clay bottomed streams.
Tombigbee and Black Warrior river systems of Alabama and Mississippi
These are aggressive baskers, so a
basking spot is required. UVB lighting is needed as well as a heat lamp over the
basking spot. A submersible heater is recommended if the water temps fall below
the recommendation. They are excellent swimmers and their captive habitat should
have a water depth as deep as possible. Substrate should be anywhere from a sand
to a fine-to-medium size gravel.
Recommended size for a single adult
Graptemys nigrinoda would be a 30 gallon aquarium as a minimum (40 or larger
preferred) for males, and a 75 gallon aquarium as a minimum (90 or larger
preferred) for females. This will provide adequate swimming area, as well as
assisting the filtration in maintaining good water quality. For additional
Graptemys nigrinoda, I would recommend adding 20 gallons of tank space per
additional male, and adding 40 gallons of tank space for each additional female
at a minimum.
Stock Tanks and Rubbermaid containers
also work well. The same space recommendations remain the same.
In captivity, they do well on
ReptoMin, Reptile/Pond 10, Cichlid Sticks, assorted veggies, aquatic plants, snails,
crickets, and assorted worms and insects.
Graptemys nigrinoda is a great turtle for a community habitat with
Sliders, Cooters, other Map Turtles and Painted Turtles.
There are 2 subspecies of Graptemys
Graptemys nigrinoda nigrinoda - Northern Black-Knobbed Sawback
Graptemys nigrinoda delticola - Southern Black-Knobbed Sawback
Care for both are the same.
Map turtles in general are sensitive to water quality, so close attention to
their water quality is needed.