Epistylis in Koi and Pond Fish Ponds Epistylis is a relatively uncommon parasite of Koi, goldfish and pond fish. Indeed, it is so uncommon, that I do not have any good graphics of it. What you would see clinically is a tuft of whitish fluff coming out from under a scale, or from some other … Read more

What Is In API’s Super Ick Cure?

API is a little bit vague about their API Super Ick Cure product, and rightfully so. The FDA is very concerned about copper-containing Malachite Green ending up in the tissues of food fish. And they’ve set about stamping out Malachite Green in as many products as they can. API labels their Super Ick Cure product … Read more

A Betta Face Covered In Flukes

A Betta Face Covered In Flukes Treatment of choice: Praziquantel. There are several products that have that. (PraziPro) It’s safe and fast. Yes, indeed, this looks like Ich but note that the spots aren’t “everywhere” and a microscope cinches the diagnosis. If you were ‘shotgunning’ in the absence of live plants, you’d check the water, … Read more

Ich White Spot Ichthyophthirius Disease Symptoms and Treatment

Freshwater Ich – Ichthyophthirius multifilis – is a killer of very small fish, and can cause “redskin” disease in the winter regardless of fish size. Freshwater Ich Written by Dr Erik Johnson Look closely at gill tissue under the microscope to be sure to exclude this pathogen, because it does not usually cause the typical … Read more

Hexamita – Protozoan Infection in Fish

At one time, I might have denied that Hexamita could be a serious dermatological pathogen of Koi, goldfish and pond fish. Recently, I have seen cases of severe skin and fin erosion that defied explanation until the Hexamita organisms were detected in abundance on the surface of the fish. Flagellated protozoan infections: Hexamita While their … Read more