Copei Tetra – A Sleek and Hardy Schooling Fish for Every AquaristThe Copei Tetra (Hemigrammus copei) is a sleek, silver freshwater fish with subtle iridescence and understated charm. Originating from the Amazon River basin, this peaceful species is a superb addition to any community aquarium. Its hardiness and adaptable nature make the Copei Tetra perfect for both beginner and experienced aquarists seeking a lively and elegant schooling fish.Size and LifespanThe Copei Tetra usually grows to around 3.5 to 4.5 cm. With proper care, they can live up to 5 years. To support a healthy life, maintain stable water parameters and feed them a varied, high-quality diet. Moreover, keeping them in groups helps reduce stress and encourages natural behaviour.Ideal Tank SetupA tank of at least 50 litres is suitable for a small school of Copei Tetra. These fish thrive in soft to moderately hard water with a pH of 6.0–7.5 and temperatures between 24–28°C. Use a fine gravel or sand substrate, and provide dense planting with open swimming areas. Additionally, low to moderate water flow with reliable filtration ensures a healthy habitat.Compatible Tank MatesThe Copei Tetra is peaceful and prefers the company of its own kind. They should be kept in groups of six or more. Compatible tank mates include other small tetras, Corydoras catfish, peaceful rasboras, and dwarf gouramis. Avoid aggressive or large predatory species that might harass them.Feeding and NutritionAs omnivores, Copei Tetra accept a variety of foods. A well-rounded diet includes micro pellets, flakes, and occasional live or frozen fare such as bloodworms or brine shrimp. Feeding twice daily in small portions ensures they receive adequate nutrition. In addition, varying their diet helps maintain their health and natural coloration.Breeding and BehaviorBreeding the Copei Tetra in captivity is achievable with the right setup. Use a separate breeding tank with fine-leaved plants and soft, slightly acidic water. Males are generally more slender and vibrant, while females are rounder when gravid. Once spawning occurs, remove adults to prevent egg predation. Feed fry with infusoria or liquid fry food until they grow large enough for crushed flakes.Species OverviewSpecies: Hemigrammus copeiCommon Name: Copei TetraOrigin: Amazon Basin, South AmericaDiet: OmnivorepH Range: 6.0–7.5Temperature: 24–28°CCurrent Size: 3 cmMaximum Size: 4.5 cmMinimum Tank Size: 50 LFAQs About the Copei TetraHow large do Copei Tetras grow? They reach up to 4.5 cm, suitable for small to medium-sized tanks.Are Copei Tetras peaceful? Yes, they are peaceful and do best in schools with similar non-aggressive fish.What are the ideal water conditions? They prefer 24–28°C with a pH of 6.0–7.5.Can Copei Tetras be bred in captivity? Yes, with soft, acidic water and a breeding tank setup.What should I feed them? Provide a varied diet of flakes, pellets, and live or frozen foods.Add a Copei Tetra to Your Aquarium Today!Introduce the elegant Copei Tetra to your tank and enjoy its peaceful schooling behaviour and resilience. A smart choice for community aquariums.