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Nandidae (leaf-fish; subclass Actinopterygii, order Perciformes) A small family of freshwater fish that have a strongly compressed, deep body, and a rather pointed snout, emphasizing the low-slung mouth. The dorsal and anal fins are long, the short tail ending in a rounded tail fin. Most species have irregular colour markings consisting of spots of different sizes and colours. Monocirrhus polyacanthus (leaf-fish), 8 cm, is a well-camouflaged, voracious predator. There are about 10 species, but the genera Pristolepis and Badis have also been placed in different families (Pristolepidae and Badidae). They are found in W. Africa, south-east Asia, and S. America.