Danios are a lively and active group of freshwater fish from the Cyprinidae family, originating from the calm pools and swift streams of South and Southeast Asia. The Danio genus is varied, with 27 unique species showcasing an array of vibrant colors and patterns. These small, usually surface-dwelling fish are celebrated for their resilience and versatility, making them a perfect match for novice aquarium enthusiasts. While most danios remain under 2 inches long, some species, like the giant danios, can grow up to 6 inches. They have an omnivorous diet, a gentle nature, and a tendency to school, adding charm to community aquariums by creating a lively and captivating environment. Danios are highly adaptable and can prosper in diverse water conditions. Nonetheless, optimal care involves specific water parameters: a temperature range of 64°F (17.8°C) to 79°F (26.1°C), a pH level from neutral to slightly acidic at 6.0 to 8.0, and soft to medium water hardness, ideally between 5 and 19 dGH. Maintaining consistent water conditions is crucial to avoid stress and illness in danios, with regular testing and adjustments ensuring their well-being.