Neon Tetras are good choice for the first time fish keeper. But keep mind that they can't care for themselves in the captive. It's very necessary to maintain the correct water/aquarium condition.
They are native to South America around the Amazon River basin. They grow up to 1.5 inch and they live 5-8 years.
Aquarium
They need at least 10 gallons (38 L) fresh Water holding tank. That provide them enough space for swimming and hiding. Adding more 10 gallon for additional 24 fishes you wan to keep.Cycling your tank
Before adding eny fish you have to cycle your tank properly. Aquarium cycling helps to grow good bacteria and kills the harmful bacteria. Beneficial bacterias helps to create a good environment for your fishes. Make that sheore that process should be done before adding eny fish. And before adding fishes test your water with water testing kit and monitor the water parameter.Add Plants
Add some aquatic or semi aquatic plant to create a natural look. Adding drift wood and rock provide them hiding space.Light
Neon Tetras are dark water fish, to give a natural look dim your light and please the tank away from the sun. Plants and hiding space also helps to shade the lights.Filtration
They need a moderate filtration system as they don't produce heavy wastage. But keep mind as they are very small fish they can be sucked into the filter intake to avoid such disasters cover the filter intake with filter sponge or plastic Nate.Temperature
The water temperature should be around 70-80 °F (21-27 °C) using a aquarium adjustable heater. Use a aquarium thermometer to get the accurate reading.Bridging time the temperature should be 75 °F (24 °C).
0 on: "How to care Neon Tetra"