Neoarius graeffei

[2][3] This species is most identifiable by its large, shark-like dorsal fin that is led by a poisonous spine.

[4] This prey sensing mechanism may be the reason that these catfish are known to eat the land dwelling hopping mouse at a high rate.

[6] This catfish is dusky grey with a bluish tint on the top of its body, while becoming lighter (almost white) closer to its belly.

This species of catfish mostly inhabits freshwater rivers and lagoons, and prefers waters that are slightly alkaline.

[7] Their diets include arthropods, insects, aquatic plants, mollusks, prawns, crayfish, fishes and bottom detritus.