If it's internal parasites you are going to lose alot of fish, as the only treatment is through a vet , it a pig worming tablet called levimsole bet i spelt that wrong i always do.
If you can't get the med you have to this going to sound awful but destroy the sick fish with the internal parasites, and strip the tank down and start again.
http
/www.skepticalaquarist.com/docs/health/nematodes.shtml
http
/www.loaches.com/faq_parasites.html
If you can't get the med you have to this going to sound awful but destroy the sick fish with the internal parasites, and strip the tank down and start again.
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