The Cardinal Tetra is a small freshwater fish native to the Amazon River basin in South America. It typically grows to about 1.5 inches (4 cm) in length and is known for its vibrant colors, featuring a striking blue body with a red stripe running from the middle of its body to its tail. This species thrives in schools, making it a popular choice for aquarium enthusiasts. Cardinal Tetras prefer warm, soft, and slightly acidic water, mimicking their natural habitat. They are peaceful fish, often cohabiting well with other small species. Their diet mainly consists of small flakes, pellets, and live or frozen foods, ensuring they remain healthy and colorful.