[2] The host typically develops a yellow or gold "dust" scattered on its head, fins and body.

The host fish is irritated, and often sporadically darts about or rubs itself against rocks.

The life cycle of oodinium starts as a dinospore that swims in the water to look for a suitable host.

After few days, the cyst sinks to the bottom, freeing a new generation of dinospores.

Free swimming dinospores are extremely vulnerable to copper compounds.