The condition known as congested fins is easy to confuse with fin rot, and can be particularly hard to correctly identify in fish who have red fins. Congested fins lead to the tail and fins taking on a torn and ragged appearance, without any external trauma having occurred to cause the tearing. While any of […]
Of all of the parasitic infections that can affect goldfish, Costia is one of the hardest to identify. It can only be seen under a microscope and – even then – can be hard to spot. But despite its small size, Costia can have a serious effect on goldfish if left untreated. If you are […]
Leeches are not among the most common of goldfish parasites, but nevertheless, they are rather nasty, and easily introduced into an existing tank. Leeches live by latching onto a living host (such as a goldfish) and feasting on the blood of the host, before detaching and dropping away when they are full, and then repeating […]
Fish pox, also sometimes known as carp pox, most commonly affects domestically kept koi carp. However, goldfish and many other species of fish are also prone to contracting the condition, particularly if they are kept together with koi carp in ponds.
All fish can potentially suffer from constipation, regardless of the type of diet they are fed, and goldfish are no exception. As goldfish are prolific eaters, constipation is one of the more common problems they face. So, if you’re wondering how to tell if your goldfish is constipated – and what you should do about it […]
Ulcers in goldfish can be caused by a range of different diseases, but they are almost exclusively bacterial in nature. The two most common types of bacterial goldfish ulcers are Aeronores and Pseudomonas. However, as the treatment of bacterial goldfish ulcers are the same regardless of the bacterial strain responsible, in this article we will simply […]
Black smudge or black spot in goldfish is probably one of the most commonly seen goldfish health problems, and one that has many different potential causes. Black spots or smudges are often indicative of disease or illness in the goldfish, and many goldfish will display blackening across part of the body or the fins and […]