What is this rare symptom???????

[cmstwc]

In the past week, I got a shipment of cory. After the first night I found there are white hair/worm??? on one of the cory fin. Anyone has any clue of what is this? Thanks a million in advance!!

[apistomaster]

Those look like one of the parasitic copepods to me like anchor "worms".
The usual anti-helminthics will not effect them.
You will probably need to use one of the medications which contain an insecticide.

[kim m]

Flubenol will deal with it I'm shure.

[cmstwc]

Thanks a lot!!!!!!!!!!!!!!!
I have some Parasite Clear from Jungle. It says it can kill anchor worm. I will do my best. Thanks a million!!!

[mummymonkey]

Those look like skin flukes to me.

[apistomaster]

Those look like skin flukes to me.

That is not likely.
These are parasitic crustaceans. Even ornamental shrimp are rarely harmed by flubendazole treatments.
Very high flubendazole doses can kill snails.
These simply are not remotely related to flat worms, tape worms or nematode worms.
Flubendazole will help if your fish are also infested by some of these others and since these are wild Corydoras they are almost certainly infested by some parasites which will be susceptible to flubendazole so by all means, treat them with it but you will need a different class of drugs to affect crustacean fish parasites.