55Gal need help picking fish

Well, we now have 1 Rainbow Shark, 1 Opaline Gourami and 1 High Fin Pleco. So since they cannot have friends it seems, what's 1 or 2 different schooling fish that can go with these guys?
 
1 Rainbow Shark, 1 Opaline Gourami, 1 High Fin Pleco, 4 Black Skirt Tetra and a pair of Koi Swordtails. I think we are done adding, unless there is a Gourami that can go with my Opaline..?
 
nope. opalines need to be kept by themselves. you have enough room to up the school of tetras to at least 8 though, which i'd do. you'll see tighter schooling and they'll be happier.
 
Hm, okies. I was going to add at least 2 more Tetras. The female Sword is so hyper and fast. She flies across the tank, seems to get stuck in the floating moss a bit, not too sure if it's on purpose or accident. The male swims around a bit, tends to take long breaks near the bottom, but he's more active than he was in the store. 2 of the Tetras though the Gourami was one of them and followed it around calmly, since the Gourami is slow, he didn't seem too bothered, just kinda surprised and didn't know how to react.
 
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