The Cardinal Tetra is a stunning freshwater aquarium fish prized for its brilliant red and blue coloration. Native to South American rivers, these small, peaceful fish thrive in groups and add vibrant color to any planted tank. They prefer slightly acidic water with gentle currents and plenty of vegetation for shelter. Cardinal Tetras are ideal for community aquariums and do best when kept in schools of six or more. Their striking appearance and calm temperament make them a favorite among both beginner and experienced aquarists.