I have a ten gallon tank and I was wondering how many Neon Tetras and True Rummynose Tetras I could put in this tank, I was also wondering if I could have a male betta in this tank with these guys.
Roan Art said:I doubt rummys and cardinal/neon/glo-lite will school together as they are not the same specie. Cardinals et al are pretty much just "different versions" of the same fish.
Sometimes one or two of my rummys hang with the rasboras, but not for long. Sometimes a rasbora will swim with the rummys, but they go back to their own group pretty fast.
Rummy also grow to twice the size of the other tetras, so I wouldn't add anything else but a school of six. I have 8 in a 36" tank and they school all the time. I don't know if a 10g is big enough for them to do it at all.
Either go with the smaller neons or just the rummy nose. IMO you don't have the room to mix them.
Roan