Cardinal Tetra
Paracheirodon axelrodi
Check Cardinal TetraThe Cardinal Tetra is often considered the more vibrant cousin of the Neon Tetra, with its brilliant red stripe extending the full length of its body. Native to the blackwater streams of the Amazon basin, these fish prefer soft, slightly acidic water with subdued lighting. A school of Cardinal Tetras in a planted tank creates one of the most stunning displays in the freshwater hobby.
Tank Size
60 liters
Temperament
Peaceful
Diet
Omnivore — flakes, micro pellets, frozen brine shrimp, daphnia
Lifespan
4-5 years
Water Temp
23-27°C
pH Range
4.6-6.2
Recommended Products
Everything you need to create the perfect tank for your Cardinal Tetra.
Accessories
Seachem Prime Water Conditioner
Essential for Cardinal Tetras, which come from extremely soft, acidic Amazonian waters and are highly sensitive to water chemistry. Prime removes chlorine and detoxifies ammonia, reducing stress during acclimation and water changes.
API Freshwater Master Test Kit
Cardinal Tetras demand soft, slightly acidic, pristine water. This 800-test kit measures ammonia, nitrite, nitrate, and pH — the four parameters you need to monitor closely. Testing weekly prevents the water quality fluctuations that crash Cardinal Tetra schools.
Food
Hikari Tropical Micro Pellets
Semi-floating micro pellets perfectly sized for Cardinal Tetras. These slow-sinking pellets ensure mid-water swimmers feed comfortably, and the color-enhancing ingredients maintain the Cardinals iconic vivid red body and blue lateral stripe.
New Life Spectrum Small Fish Formula
Premium small pellets made with whole Antarctic krill and natural pigments that intensify the brilliant coloration of Cardinal Tetras. A nutritionally complete staple trusted by serious fishkeepers for delicate Amazonian species.