Causes of ich

[aquaria]

What causes this diease?

 

[27mtaylor]

Stress. When a fish becomes stressed, it's immune system weakens and is not able to fight off ich.

 

[anthonynyc]

Originally Posted by aquaria
What causes this diease?
Ick is a parasite that must be introduced into the tank. Sure, the stressed fishes will have the lowest immune system and will be the first to probably be infected but it is not something that lives in the tank waiting to jump onto a stressed fish.
Anthony

 

[27mtaylor]

Correct. It has a life cycle that it goes through and must have a fish to host it or it will eventually die off in 4 weeks or so.

 

[beth]

There is detailed information in the FAQ Thread at the top of this forum.