The chucky madtom (Noturus crypticus) is a critically endangered freshwater fish endemic to the U.S. state of Tennessee.

The fish is constrained to a 3 km (1.9 mi) stretch of Little Chucky Creek and does not expand from that region although there are suitable habitats nearby.

[5] The chucky madtom has an extremely small distribution and is only known to live in two streams in the French Broad river system in eastern Tennessee.

Due to the small amount of specimens observed in the wild there is currently no information about the diet of the chucky madtom or whether or not it has any natural predators.

Environmental pressures like siltation and destruction of the riparian zone may play a key part in the range of this endangered fish.

The organization performs captive breeding programs with endangered fishes in order to preserve the biodiversity of southeastern streams.

[6] In the management plan CFI says that agricultural use of the surrounding land has most likely contributed most to the small range of the chucky madtom.

Siltation affects bottom feeders like the chucky madtom as it removes hiding places as well as covering potential food.

It is theorized that this sediment contaminating these streams are inhibiting both the feeding and reproductive practices of the chucky madtom.

The Middle Nolichucky Watershed Alliance (MNWA) is currently responsible for carrying out the restoration plan for the chucky madtom.