The Kole and Tomini are smaller tangs, so should be OK in a 75g. I have both of these, and they are excellent algae eaters. The Kole is particularly good as they are tireless workers.
The Foxface may outgrow your tank size. I have one, too, and the darn thing grew to about 6 inches, and is a real pig for food (and big pooper, too). Nice looking fish, though.
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