Izzy, it's a lousy pic but maybe you can tell what kind of loach this is? It was sold to me as a peppered dojo loach but I don't think it's a dojo. It isn't getting any longer and it doesn't act like a dojo at all. It's really skittery and hides a lot. Sorry, it's washed out because it's on pale sand.
When it was on black gravel, it looked closer to this:
This website says it's a peppered loach, cobitis taenia.