Black-Knobbed Sawback

 

 

SCIENTIFIC NAME

Graptemys nigrinoda

ADULT SIZE

Male   3" - 4"            Female   6" - 10"

DIET

In the wild, they feed on snails and insects, as well as aquatic vegetation.

TEMPERATURE RANGE (F)

Air Temperature:  Low to mid 80's 

Basking Temperature:  High 80's to low 90's

Water Temperature:  Low to mid 70's

HABITAT

Sand and Clay bottomed streams.

DISTRIBUTION

Alabama, Tombigbee and Black Warrior river systems of Alabama and Mississippi

BEGINNER TURTLE

Yes

CAPTIVE HABITAT

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 ENCLOSURE

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.

CAPTIVE DIET

In captivity, they do well on Mazuri and ReptoMin, Reptile/Pond 10, Cichlid Sticks, assorted veggies, aquatic plants, snails, crickets, and assorted worms and insects.

COMMUNITY HABITAT

Graptemys nigrinoda is a great turtle for a community habitat with Sliders, Cooters, other Map Turtles and Painted Turtles.

OTHER INFORMATION

There are 2 subspecies of Graptemys nigrinoda -

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.