Why does my goldfish float after eating?

Why does my goldfish float after eating?

Floating goldfish post-eating is a common issue that results in an internet wormhole. Let's get some facts straight: Goldfish are Physostomous Fish Yes, it's a big word. What is means is that goldfish, like many other carp, have a pneumatic duct between their swim bladder and esophagus. It connects in between the cranial and caudal [...]


Behavioral Signs of Disease in Fish

Behavioral Signs of Disease in Fish

Behavioral signs of disease are harder to spot for most fish owners than physical signs of disease. By watching your fishes' behavior consistently, for at least 5-10 minutes per day, you will be able to determine what is normal or abnormal for your fish. Some "fun fish quirks" may actually be a sign of a [...]

Physical Signs of Disease in Fish

How can you tell if your fish is sick? Here are the physical signs you should keep an eye out for if you owner fish. Behavioral signs of disease will be addressed in the next post. Trauma Most trauma events in fish present as open wounds. The fish above was in an outdoor pond that [...]

Do Fish Get Cancer?

Unfortunately, fish are not immune from cancerous growths. And sharks, being fish, are included in this group. Like tumors in all other species, some are treatable, while others are not. Here are some of the most common cancers we seen in our daily practice. Goldfish Infiltrative Papilloma-Like Warts Mario the Goldfish - after receiving cryotherapy [...]

Carp Pox in Koi

A cousin of Koi Herpes Virus, Carp Pox in koi is also a herpes virus (Cyprinid herpesvirus-1). It is a fairly common disease for our office to see and this time of year, in colder water, you may be seeing more clinical signs than usual. How do fish get Carp Pox? Like any infectious disease, [...]

Fungal Disease in Fish

Fungal Disease in Fish

An aquatic environment is an ideal growth environment for many fungi, especially water molds such as Saprolegnia. Unless your fish's immune system is compromised, you won't have any reason to worry about fungal infections. Fungal Species There are thousands of potential species of fungus lurking in your aquarium or pond. Aquatic environments are ideal for [...]

Fish Ulcers

One of the most common owner concerns we get calls about are "ulcers" on their fish? What is an "ulcer," how do they come about and how do you fix them? What is an "ulcer?" Most commonly, fish get skin ulcers. This is an open wound in the skin of a fish that may expose [...]

Stress in Fish

Fish respond to a "stressful event" the same way as all other animals, humans included. What defines a "stressful event" may differ, but the behavioral and biological changes are the same. The Stress Response With any stressor, a fish's body will react in the following: Primary Response - seconds to hours after eventIncreased corticosteroid and [...]

Freshwater Fish Lice – Tiny Alien Parasites

There are many parasitic crustaceans throughout the fish kingdom, the one most commonly seen in pet fish is Argulus ssp., also known as "Fish Lice." Under the microscope, they are one of the strangest looking parasites you will come across. Flickr/Chris Blanar These parasites are found in salt and freshwater all around the world. We [...]

Trichodina in Freshwater Fish

Also known as the "scrubbing bubbles," trichodinosis is caused by freshwater parasites commonly found on koi and goldfish. Although there are many species, they all have a similar appearance and behavior. They are circular in shape and have multiple teeth that ratchet around, feeding on skin and mucus. Here you can watch them in action: [...]