help with loach id??

[sophie]

if anyone can help me out with my misurgnus anguillicaudautus/mizolepsis
dilemma, I would be very, very grateful.

photos & gibberish here:

http://www.freewebs.com/fishstuff/misgurnusxxx.htm

I'm also a little concerned about one of the fish (I've had one for four
weeks and the other two for one, in a fully cycled quarantine tank); it
only moves when I'm not looking and spends pretty much all its time
"resting" - under a log, on top of the filter and occasionally buried in
the sand. It only moves if actually poked and seems not to sense food in
the water. I don't think their eyesight is great, so I wondered if

a) it can smell

or

b) if it perhaps has ?flukes?; sometimes it breathes very rapidly for a
random amount of time and for no apparent reason; however all three of
them have many entirely random behaviours. I like them a lot, they're
funny, but this weird lethargy and lack of interest in food unless
actively *fed* in this particular fish makes me reluctant to add them to
the main tank any time soon.

All help on either issue hugely appreciated.
--
sophie