The Neon Tetra is well-known in the aquarium world but there are many different kinds like the Cardinal Tetra, the rare Congo Tetra and the Serpae Tetra. All these fishes are in the family called Characidae and are comparatively small fishes. These fish are very popular because of their stunning colors.
The Neon Tetra will stay smaller than 2 inches, are sturdy and adaptable which makes them popular for the novice aquarist. They add lots of color with their bright blue and red coloration. If you use a dark substrate it will make them stand out even more. Since they are a schooling fish, they should not be kept alone or they will get stressed out.
In a large group, they will spend more time out in the open. This fish is from the warm rivers of Colombia, Peru and Brazil so you want your water temperature to be from 22 to 25 degrees C.
They do better in a planted tank instead of a barren one so provide sturdy plants like the Java Fern. You can use substrate and floating plants though the floating kind will make them feel more secure. as per www.articlecircle.com
This fish can live in acidic as well as slightly alkaline water with a pH from 5.5 to 7.5. Feed them a high-quality flaked Tetra food and be careful no to overfeed them.
The Congo tetra is harder to keep as the water will need to be changed much more often. They do best in an aquarium with strong circulation, water temps from 23 to 26 degrees C. and a pH level from 6.0 to 7.5. It is recommended to keep the water slightly acidic even though they will tolerate a pH above 7.0 because it will make them less sensitive. The Congo tetra is native to the Zaire River basin and the water there is very soft. It can adapt to harder waters and should always be kept in a school of at least 5 Congo Tetras.
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