110 Gal.Looks like a good sized tank. I'm not good with liters and am too lazy to convert lol. One question though: do you feed them? The few I saw looked anorexic.
This catfish is a non-predator pangassius. So I will not have problems of this nature.Remove the catfish. Soon you will have 1 catfish and zero loaches. In another forum they also had catfish. It is used has food for human but I would not eat that due to the dirty condition they are fed and bred. Sorry for the bad news. There are Tankmate available for clown loaches.
That's pretty standard for loaches though, my 180 looks empty half the day but if you look close you can spot tails and noses sticking out.I'd move the clowns to a 40b or get a lot more of them. I watched the video on mobile and didn't see and loaches lol
The better one is the non-predatory catfish, that made me giggle.