If your goldfish has developed a blood-red streak, patch, or spot on its body or…

If your goldfish is losing weight despite eating normally, passing pale, stringy waste, or has…

Goldfish camallanus worms also known in the hobby as “red worms”, are one of the…

Despite the name, goldfish anchor worm isn’t actually a worm — it’s a parasite, a…

Goldfish Gill flukes have a reputation among experienced goldfish keepers as one of the hardest…

Fluffy, white or grey cotton-like growths on your goldfish’s body, fins, or mouth are almost…

White or grey cotton-like fuzz around your goldfish’s lips, sometimes with red, eroded tissue underneath,…

A fine, gold or rust-colored dusting across your fish skin — almost like it’s been…