I'm sorry your loach is not doing well

I'm sure you will get some good advice if you post your problem in the Fish Health and Treatment forum. It may be missed by a lot of helpfull members if you just keep posting here. Good Luck!
please copy and paste the following along with your answers into a post in the
Fish Health and Treatment Forum. This will help the other forum members to build up a picture of what is happening in your tank and will aid in a more prompt diagnosis and treatment recommendation: Good Luck!
* Type of fish that are affected (common name and latin name if possible - common names vary worldwide, latin names don't!).
* How long has the tank been set up for?
* Size of tank (dimensions and volume).
* How is the tank being filtered?
* Water temperature.
* Your maintenance regime (e.g. how often water changes are carried out, what percentage of the water is changed each time, how often you clean your filter/s and how do you do this?)
* Has anything new been added to the tank recently? (fish, plants, live food, decor etc).
* What other fish are in the tank?
* As detailed a description as possible of the symptoms the fish are exhibiting (remember a photograph can speak a thousand words).
* How long ago the affected fish were added to the tank, and how long the fish have been displaying symptoms.
* Your current water parameters - ammonia, nitrite, nitrate, pH (please don't say 'my water is fine, the levels are ok', we would like actual numbers from the test results).