Apistogramma sp Neon Blue Head is a species of cichlid fish native to South America. They are a small fish, typically reaching a maximum size of 2.5 inches, and have a unique body shape that is high and pointed at the back and flat at the front. The males are particularly striking, with a vibrant electric blue head and body that is highlighted with yellow stripes and spots, and a black tail. The females are a more muted yellow with a brown head and a yellow to orange tail. The fish prefer acidic water, and should be kept in an aquarium with plenty of hiding places and a sandy substrate. They are a peaceful species that can be kept in groups, but they are somewhat territorial and should be provided with plenty of space.