Today at PetSmart the sales girl told me that it is okay to put tetras in a tank that is smaller than 10 gallons. I want to slowly introduce my turquoise betta "Steve" to other fish. I have a heater that keeps that water at 76-78ish degrees. I have a plant and a terracotta pot that acts as a cave.
I plan on putting two tetras in my tank depending on how Steve handles the first one. I know tetras are social and need several to be okay. The first twenty four hours have been fine. They seem to get along. My concern is that the clerk told me that it is not a big deal to have three tetras with my betta in a 2.5 gallon tank (if I do the regular maintenance and tank cleaning). The only reason i decided to go ahead with it is that I am going to acquire a ten gallon tank with all the bits. I do plan on getting a few more tetras if it is okay to keep them in a small tank.
Is it okay to have that many fish in my tank?