Black-Knobbed Sawback

Black-Knobbed Sawback
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  • Item #: BKS


 Scientific Name:  Graptemys nigrinoda

Identification:  The carapace of Graptemys nigrinoda is slightly domed with the first four vertebrae possessing backward-projecting, knob-like processes, which are black in color. The second and third processes are more dominant in size compared to the first and fourth. With aging females the knobs are reduced to small swellings.  The carapace is golden/tan in color. Within each pleural, or "plate", of the shell are yellow-green circular rings which are outlined in black. Hatchlings are similar in color to adults, but the colors tend to be more vibrant and contrasting. The knob-like processes are compressed laterally.  The head is small, and is dark brown with yellow stripes, with yellow crescents behind the eye facing towards the posterior end of the turtle. These stripes continue on the legs of the turtle also, with the underside of the leg being lighter than the dorsal surface

Range: Northern Black-knobbed Map Turtles are found only in the upper portions of the Alabama and Tombigbee River systems of Alabama and Mississippi.
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.

One of the narrow headed maps, Black-Knobs are excellent swimmers and spend a lot of time foraging the bottom and searching underwater objects for food.  They do very well in setups with lots of water circulation, often swimming into the current for hours on end.  This is a small to medium size turtle.  Males are about 3.5 to 4.5 inches as adults and females are about 6 to 8 inches long.  Males reach sexual maturity at around 3 to 4 years and females reach it around7 to 8 years.  Females have a clutch size of roughly 5 eggs and can lay 3 to 4 clutches in a year.
There are 2 sub-species of graptemy nigrinoda:
     Graptemys nigrinoda nigrinoda - Northern Black-Knobbed Sawback
     Graptemys nigrinoda delticola - Southern Black-Knobbed Sawback
Graptemys nigrinoda is a great turtle for a community habitat with Sliders, Cooters, other map turtles and Painted Turtles.
This species has been on the losing end of interaction with humans for some time now and are on the protected lists in both states where they are found.  Only a handful of breeders have had success with Black Knobs, so availability is very limited.
Price $99.00
Availability Out-of-Stock
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