03-20-2007, 05:15 PM
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I have this same tank in both the 3 and 12 gallon versions. I have 5 danios, 5 golden white clouds, 3 rasboras, 2 cory cats, a shrimp & a snail. Some would say I am overstocked if you follow the 1 inch of fish rule but this is a fully cycled tank that I keep clean by keeping on top of the water and filter changes. The corydoras, snail and shrimp stay on the bottom, and the others stay mid/top so they are not in each other's way so there is enough swim space. And to answer your question, my danio/rasbora/clouds (minnow family) definitely school together when they are in the mood.
I guess what I am saying is you really need to plan out what to put in a small tank (which you are doing obviously). We also have a 3 gallon, but the Serpae Tetras we have are going to a friend with a huge tank. There just isn't enough room for them to be happy and they are nipping at each other. I'm going to replace them with 3 or 4 of something like guppies, neons, white clouds, danios, etc.
If you are going to get a 2 gallon I recommend nothing but a betta really. They are so easy to take care of that it would be the best choice for a desktop. And VERY showy if you look at a crowntail.