Blue Gourami fish disease may vary, but there are some common ones. Although curable, preventing is far better. Now, read the information about what causes dan how to prevent them. Blue gourami fish is a tropical ornamental freshwater fish commonly found in the market. They are famous because of their cobalt blue color and liveliness. Some say that they are easy to keep, making them suitable for those new to fishkeeping. Blue gourami is certainly a stunning fish. However, sick blue gourami will be an unbearable sight for any fish keeper. In a proper aquarium, blue gourami fish disease rarely occurs. Nonetheless, here are a few common ones: Freshwater Ich This disease is commonly caused by protozoa named Ichtyopthirius. Freshwater ich is a common blue gourami fish disease, and it appears on their skin as white grain nodules. As the white grain nodules appear, the fish will have other ill signs, such as loss of appetite, cloudy eyes and stays at the bottom of the aquarium. To ...