Clown Loaches--sick?

"Koi-Lo" wrote in
:

Thank you. Would you recommend treating them even if no parasites are
seen? If they spend a lot of time hiding it could be easy to miss an
infestation starting. I read the above messages and will make sure
they have lots of places to hide and feel secure in the Q tank. I'll
give them a few platys as dither fish. The tank itself if off the
beaten path in my home so they should not suffer too much stress.

You'd have to judge yourself based on the condition you got the fish in and
what you know about the tank it is going into. I don't like to use
chemicals when they're not necessary, but a single mild dose of quick-cure
in a clean tank doesn't appear to hurt much.