I did the math, and 24.5x10x9=2205 divided by 231=9.54g tank, so you have 3 more gallons to work with than you thought 
Are you sure frogs, DPs and shrimp will work out? :lipssealedsmilie:
NO danios in a 6.6g.

Are you sure frogs, DPs and shrimp will work out? :lipssealedsmilie:
I found that 6.6 for sale on www.fish.com. I think that would make the perfect betta tank, or for a small group of fast swimmers like danios.
NO danios in a 6.6g.