I tend to agree with Mr. A here... The Angelicus botia (actually botia kobutai) are great tankmates for CL's, but for now you should just start with more CL's. They wont shoal with the CL's but they make a great contrast & have no problem getting food, despite their more slender build. I also love the way their patterns change as they grow from dots to stripes to a grid, then finally to some unique combination of dots/stripes/grid. Its almost like they're just trying stuff on until they find one thats different from the others...
One cool trick I learned from the Loachaholics around here is that if you are short on bottom space, CL's will shoal with Tiger Barbs due to the similar coloration, which pulls them up from the bottom & gets them swimming higher up in the tank. Its fun to watch them dart around & try to keep up with the T-barbs, too!
One thing to note: the kobutai (aka burmese border loach/marble loach/polkadot loach) act much different than CL's. The larger the shoal, the LESS you will see them. What I mean is they dont shoal much while swimming, but they do like to pack in very tightly under rocks & logs. In order to see mine more active, I spread them out with no more than 3 in a tank & I never put them with another of the same size. That way they are always out & about. They're too dang beautiful & expensive to stay hidden under rocks until the lights go out. Unfortunately, like CL's, they are all wild-caught & must be quarantined/de-wormed before they join your healthy fish.