Epistylis Video No. 4
The genus Epistylis, also called Heteropolaria, belongs to the order Peritrichida, a group of ciliated vase-shaped protozoans. Many species in this genus are sessile and form branching colonies. Colonies of Epistylis can cause "red sore disease" in freshwater fish. The organisms secrete an enzyme that breaks down tissue at the attachment site and leaves a wound that is vulnerable to bacterial and fungal invasion.
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