OK, here's what my Handy Dandy Fishlopedia mentions about "What if my fish
is too thin?" ...

- "Pathogenic, usually systemic, infection with bacteria"
- Fish TB is "particularly likely to cause" this
- "endo sitic protozoan infection (ie: neon tetra disease, hole in
head,
heterosporis)" ... doesn't mention anything specific to livebearers
- "Heavy infestation of endo sitic worms"
- "incorrect diet or long term shortfall in food intake"

The above doesn't really mention anything too specific, but I looked up
fish
TB in the same book and it mentions that fish TB is "fairly common in
aquarium fish, particularly gouramis, barbs, tetras, and livebearers."

My guess would be since the livebearers are particularly susceptible to
fish
TB, along with the other fish mentioned above, but if you don't have any
of
the above mentioned fish, then only your livebearers would be showing
signs.

Try reading up a bit on fish TB. The book I use is excellent, it's called
the Tropical Fishlopedia by Mary Bailey and Peter Burgess.

Btw, here's what in mentions about a cu

"difficult to cure, although antibiotics such as kanamycin and
erythromycin
are sometimes effective."

Hope that helps,
Harry

Hi
Actually TB was my other choice, but it just doesn't seem right, but flukes
don't either. I looked at the worst one and besides the weight loss, it was
slightly red/pink in front of the anus. It had also been flashing and the
fins were also clamped. Thats why I thought maybe flukes, In the tank
there are also corys and a bulldog pleco and some live plants. How about
adding salt? Would salt harm the other residents? If it is flukes what can
I treat the tank with that won't harm anything but the flukes(salt work?)?
LFS has Clout and Life Bearer for sure. I'm going to a bigger store on
Monday so maybe they would have Fluke Tabs or something else if I need to
treat for flukes. BTW I hate treating my tanks, but I don't any other
ideas. I change my water either weekly or bi-weekly(20%-25% approx) and the
only thing I think that may not help is the pH being a little high.
What does your book say about gill and body flukes?
JHudson