Tetra is a genus of small freshwater fish commonly found in aquariums. They are known for their vibrant colors and peaceful nature, making them popular among fish enthusiasts. Tetras typically thrive in schools, which means they prefer to be in groups of six or more. Some well-known species include the Neon Tetra and Cardinal Tetra, both admired for their striking blue and red hues. These fish are native to various regions in South America, particularly in the Amazon River basin. Tetras are omnivorous, feeding on a diet that includes small insects, plant matter, and specialized fish flakes. Their adaptability to different water conditions makes them suitable for both beginner and experienced aquarists.