Examples include guppies, mollies, moonfish, platys, four-eyed fish and swordtails. Good tankmates include non-fin nipping tetras, non-fin nipping barbs, corydoras, platys and other gouramis. Platys are widely used in tropical aquariums. Anaplasma platys (formerly "Ehrlichia platys") is a Gram-negative bacterium. The generic name, "platax" was coined from the Greek term "platys" - meaning "flat".