Trish- It does sound like an external parasite, but not definitely. See if you get some good results (lessening of symptoms) with the water changes and another round of Quick-Cure. It wouldn't be wise to completely rule out the bloat possibility (as Barbie mentioned) because there are a couple different causes for that and Tropheus are so prone to that syndrome. Also we can't be 100% sure that there isn't a problem with the foods, because you've only had them a short time as far as feeding goes. This is probably not the problem, but you can't be sure yet. Do they tend at all to keep their fins a bit closed (slightly clamped)? Do they swim in one place with exaggerated lateral body movements (shimmy)? Is there any change for the WORSE in the days following a water change? What type of sea salt did you use? Brand name? If you are using just aquarium salt I think you should add some Epsom Salt too, like a teaspoon per five gallons, because they might be low on magnesium and that could easily be adding to their problems. An experiment that you really should try is to remove the next fish that seems to be showing symptoms and place it in a different tank. Occassionally when I do this I find that the fish begins to recover, and of course that is a VERY useful thing to know, because it means that the problem is in the tank, not the fish. You could likewise try a different food on one of the ailing fish. Long shots but well worth trying. You might also pick up a new jar of the Spirulina flakes (maybe a different brand even) and see if the fish respond to it. While you're at the LFS you might as well also pick up some Metronidazole (or Clout as Barbie mentioned- I'm just not that crazy about Clout) because it's good to have some Metronidazole around when you have the kind of fish you have. Of course there is always the possibilty that the parasite (if there is one) is a skin fluke, in which case the Quick-Cure would help but not cure it and you'd have to use something else like Fluke Tabs (or some of Susan's Praziquantel). But we'll worry about that later. If you saved any of the dead ones in the freezer I'd be happy to take a look at it, next time we get together. Steev Susan Welenofsky wrote: > Trish: > > I use Seachem Lake Malawi Cichlid salts and Seachem Taganikya buffer. I don't > add any sodium chloride (salt). > > Susan ------------------ To unsubscribe from this list, please send mail to majordomo@thekrib.com with "Unsubscribe gsas-member" in the body of the message. Archives of this list can be found at http://lists.thekrib.com/gsas-member/