The re eye tetra, also known as the Yellow Banded Moenkhausia, the Yellow back Moenkhausia and the Yellowhead Tetra is a species of tetra. They are a freshwater fish, can grow up to 7cm, and can live for approximately 5 years. The Red-eye tetra has a bright silver body accented by a black tail and a thin red circle around it's eye. They are found in South America, in Paraguay, eastern Bolivia, eastern Peru, and western Brazil; aquarium fish for the hobby are now bred extensively in Asia.