Tetras are schooling fish, you should ideally have at least 5. Also, your tank needs to cycle first. Keep the tetra in the tank with a filter and heater for at least a month or 2 before adding tankmates. Otherwise, you risk ammonia poisoning. Always use water conditioner to treat tap water. A liquid test kit for aquariums is required if you want to keep a healthy tank. API freshwater test kit is easy to find in stores. The test strips are inaccurate.
When considering tankmates you have to keep in mind several things. The tankmates have to be able to live in 10 gallons. Remember just because one of those fish can live in 10 gallons doesn’t mean 10 of those fish will; keep your stocking amount in mind. Two, they have to be fish that are able to live in the same ideal temperature range as the tetras. Three, tetras can often be fin nippers. So long finned fish or slow moving fish should only be added if you are very cautious and remember it might not work out.
· 10 months ago