OK I have now done crazily extensive research about this Callamasus/Nematode Parasitic Worms. Here's the info. It's not good news to anyone who has an infestation of this horrid parasite.
How to Get Rid of Camallanus /Parasitic Nematode Worms
• Most fish infected go through quarantine tanks with no symptoms. Camallanus worms can take up 6-12 weeks to develop to a large enough size or become frequent enough for the average aquarist to notice. Free-living first-stage larvae may survive for more than three weeks in the tank without fish. They can live in the substrate/gravel. So entire tank must be treated not just individual fish exhibiting symptoms. It can also pass through eggs/babies of infected fish.
Fish Symptoms:
• Red or pink worm protruding from the anus. Several worms may protrude at the same time. They move quickly back into the body cavity when the host fish is active.
• They cause wasting away disease and white feces.
• Fish may become listless and bloated. Refuse to eat.
Treatment Suggestions:
Levimasole Treatment: available via -http://www.inkmkr.com/Fish/ (basic killing dosage for Levamisole HCl is 13
PPM) per recommendations on this link)
•
http://www.inkmkr.com/Fish/Camallanu...Procedure.html
• Change the water in the tank to be treated, as close to all of it as you can. Don't try to scrub the tank clean.
• Watch the fish for the next 3 days and 2 nights. Net out any dead ones. Let them dry on a news paper or paper towel and into the trash. NOT THE SINK or COMMODE! Don't put them back into our water system.
• Keep feeding fish as usual.
• After 3 days, change the water again to remove the dead Nematodes and the Medication.
• Treat the tank in 3 weeks due to the fact that pregnant females may expel infected eggs. Change the water in 3 days.
Fenbendazole (Panacur) Treatment-http://www.inkmkr.com/Fish/
• Treating all new fish in
QT with a 2day dose of medicated food, you now can avoid infesting your tanks with camallanus worms. Best of all...Fenbendazole also kills larvae and eggs
Camallanus worms have developed immunities to common wormers on the market which have reduced effectiveness or do not work at all. Callamanus worms are reportedly immune to Prazi medication, Praziquantel powder, Droncit (Prazi), Prazipro, Trichlorfon, Metronidazole, etc.
Note: One site recommended to avoid feeding fish tubifex or worms because they can be contaminated with other worms/parasites.