Nice loaches.
I've never seen a short bodied one, lol, it looks funny.
Also, what type are the yellow barbs on the last video, denison barb variant?
Another question because its the only time I've seen it in someone elses tank.....On the last video at 2:26 there's a denison barb with distorted colouring. One of mine went through a colour transition like that, took several months. It ended up looking like a clown loach, then eventually reverted back to normal colour. At some stage of the transition it looked exactly like yours at 2;26....Do you know why they would change colour like this?
Here is a picture of mine when it was at "clown loach wannabe" stage...