Neon tetra

The neon tetra is a Freshwater fish of the characin family of order Characiformes. The type species of its genus, it is native to blackwater and clearwater streams in the Amazon basin of South America.

Neons should be kept in a group of at least six. Any less than this and they might start getting nervous and aggressive with each other. Keep in mind, this is an absolute minimum. The more the merrier with these little guys.