Thanks ) Believe it or not the sharks were atound 3" when I got them and I was afraid my frontosa might eat them as he's about 6-7" but they grew very quickly. Had them around 2 months and they are all about 4-5" already.
The clown loach is about 5 inches. I inherited the two when I got a 45g last november but it was well overstocked and the loaches haven't grown even in their new 90g tank. Probably stunted but they're lovely.
that's definitely an albino plec. i had to check your location to make certain you didn't have the one i had to sell back! boy, that picture brings back the memories...
and your apistos look like cockatoos to my untrained eye. shouldn't be a problem to add the second female (except maybe from a hybridization point-of-view, should she turn out a different species).