Soon enough, they all should eat about anything- flake, freeze-dried and frozen foods. Cardinals can be the fussier eaters in the beginning but should adjust. Cardinal Tetras prefer clear water that is standing or slow-moving and low-lights. Neon Tetras live in dark water with dense vegetation and low lights. With a temperature range of 26 – 29℃ (76 – 85℉) Neons like a p.H of 6.2 – 6.8 and Cardinals a p.H of 6.0 – 6.8. Do not introduce them into recently established aquariums. With this in mind, know that these fish are sensitive to the overall water quality. This makes them more tolerant of water conditions. Though most you will find in aquariums will be captive breeds. Some of those reasons are due to difficulties in breeding, up until recently.īoth Neon and Cardinal Tetras originate from South America. Although, are still less widespread when compared to Neon Tetras. Cardinal Tetras are becoming a common sight in aquariums. They can grow to be 1.2 cm longer than Neons. Then, there are Cardinal Tetras, often confused with Neon Tetras. Amazingly sought after for their bright colouring, which makes them visible in blackwater aquariums. And, ever since they have become one of the most desirable aquarium fish out there on the market. Neon Tetras were the first ones on the aquarium keeping scene, back in 1936. ![]() The most visual difference is a Neon Tetras red stripe only runs halfway up their body, and their blue stripe is a less vibrant blue Have similar, beautiful colourings, and suit blackwater aquaria. Neon and Cardinal Tetras are arguably the most popular of the small Tetras.
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