Author: Dr. Erik Johnson

Dr Erik Johnson is a Marietta, Georgia Veterinarian with a practice in small animal medicine. He graduated from University of Georgia with his Doctorate in 1991. Dr Johnson is the author of several texts on Koi and Pond Fish Health and Disease as well as numerous articles on dog and cat health topics.
18
Oct
2019

Identification and Treatment of Costia, Deadly Parasite

Costia Costia or Ichthyobodo necatrix, is a ciliated protozoan parasite of freshwater fish that also has the capability…

18
Oct
2019

Additional Details on Ich, White Spot Symptoms and Cure

Freshwater Ich (Ichthyophthirius multifilis) is a ciliated protozoan that encysts under the epidermis of the fish; and,…

18
Oct
2019

Competent Pond Installer Link Exchange

If you can help people with their ponds, either fixing them or installing them, please get on…

17
Oct
2019

Worms in Koi and Pond Fish

A discussion of the major worms and their control Worms in Koi In the past, the discussion…

17
Oct
2019

Argulus Fish Lice Under the Microscope

Argulus – Fish Lice look like little (4mm) greenish or yellow “flying saucers” and are easily visible…

17
Oct
2019

Cat Colds – Or Snuffles – FELINE VIRAL RESPIRATORY DISEASE

Often, the best combination of treatments I have found for Snuffles is short or long acting cortisone,…

17
Oct
2019

Waterchanges in Koi ponds, changing water in watergardens

Abstract: Changing water all the time, continuously, is easier than dump type water changes. It’s better for…

17
Oct
2019

Chilodonella infections, rapid mortalities from this freshwater parasite of Koi, pondfish and aquarium fish. 

Chilodonella infections, rapid mortalities from this freshwater parasite of Koi, pondfish and aquarium fish.  Cleared with salt…

17
Oct
2019

Necropsy in Koi Basic Steps and Handling For Samples

What’s here is a video about necropsy in koi, the Necropsy in Koi Basic Steps and Handling…

17
Oct
2019

Flukes or Trematodes Symptoms and Treatments in Koi and Pond Fish Aquaria

Flukes, also known as Trematodes are the most common almost ubiquitous parasite of Koi. And while Koi…

17
Oct
2019

Ich Diagnosis Symptoms and Treatments Images and Video

Ichthyophthirius “Ick” or “Ich” in Koi, Pond Fish and Aquaria also known as white spot, seen under…