The logical answer is a very plain L24. The main reason is the eye is white instead of dark. Only the 24s and 25s have them. Both of these can grow larger then 24" but only in ideal situations. There are two L25 at The Shedd that are massive. On my YouTube channel I posted a video of them a few years ago.
Since all the other tank mates have such good color environment isn't an issue. Not all fish collected are show quality.