Nothing transforms a freshwater aquarium quite like the mesmerizing, synchronized movement of a tight school of tetras. Known for their brilliant iridescent colors, peaceful dispositions, and active personalities, tetras are the quintessential addition to any community display or heavily planted aquascape. From the iconic neon blues and reds of the Cardinal Tetra to the striking, geometric patterns of Rummynose and Congo Tetras, these hardy dither fish bring instant energy, depth, and contrast to your mid-water swimming space. Schooling Aquarium Tetras