Pink pet fish??

[ChilDawg]

I can't advocate anything less than 2.5 for a single betta...and no frogs should go with them in case you get the wrong species and the betta just happens to be on the business end of that species' food chain...

Bitterlings are more CW fish, right? I wouldn't keep them with tropicals.

 

[Andy16]

Once you get all the basics down for cycling and other things, maybe invest in a bigger tank. A big mistake in a small tank, would usually be a small mistake in a big tank. Also more fish options, especially if you want somehitng more specific like a pink fish. Most import is hte cycling, and there are so many good web sites on it including the forum here. Search the sites that others reccomended and tank their advise.