Join Date: Jun 2011
Location: Nova Scotia, Canada
That's quite the massive tank, and more than enough room for the fish you plan on using. Myself, I would go with the tetras, 9 is a nice number (I would go with a few more personally). More cories though, they prefer larger groups. But that tank can more than handle that bioload if you have a proper filtration (I like to double mine, ex: 55g would get a 100g filter).
And personally, after watching my danios for the last year+, I wouldn't put them with female bettas. They are a top dweller and quite territorial of that space. Seeing as female Bettas need the top to breath and eat, it's putting them right in the Danio's path. Tetras are mid/top dwellers and have no issue staying out of the Bettas way :)
Last edited by Pitluvs; 10-16-2012 at 05:06 PM.