yes, get Cochu's blue tetras! they are so gorgeous, severum mama and HN1's are more gorgeous than i have seen in my LFS, i wish i could afford to buy some through them but yeah, if you can do it i would go for the Cochu's. cardinal tetras are also great if you want color, i love ours. people say they are hard to keep but i completely disagree. we bought 11 and every one of them are still alive and very healthy for almost a month now. and they are our very first fish! i love the von rio's as well, i think we may end up with some (if we can find them) in our hex tank, they add so much color. i also vote for celestial pearl danios, they are so cool looking. we actually may end up with some in with our cardinals... hehe...