Fish

Sean Perry, DVM

The following content may contain Chewy links. PetMD is operated by Chewy. Goldfish Species OverviewGoldfish (Carassius auratus) is the most commonly kept freshwater fish species across the globe. Goldfish originate from China during the Tang dynasty when a gold color mutation was observed in normal silver carp, then these gold individuals were selectively bred for generations. It wasn’t until...

Sean Perry, DVM

The following may contain Chewy links. PetMD is operated by Chewy. A beginner is able to learn the basics on how to take care of an aquarium with a variety of different  beginner fish species. Numerous fish species such as celestial peal danios, golden dwarf barbs, neon tetras, pygmy Corydoras, guppies, betta fish, and dwarf gourami are great beginner species. Small fish tanks are one of the...

Sean Perry, DVM

The following content may contain Chewy links. PetMD is operated by Chewy. Betta Fish Species OverviewBetta fish (Betta splendens) are a popular small ornamental fish that has beautiful coloration, various fin shapes, and are known for their ease of care. Bettas grow to a maximum size of about 3 inches and can have elaborate fins and tails. There are over 70 different types of bettas that have...

PetMD Editorial

Lymphocystis disease is a common viral infection which affects the skin and fins of saltwater and freshwater fish. Although it is serious, it does not cause any health problems; the disease only disfigures the fish. Fishes kept in aquariums or outside in ponds are both susceptible to Lymphocystis disease. The painted glassfish is the most prone aquarium fish to contract this infection. Symptoms...

PetMD Editorial

Carp pox is a viral disease which is caused by the herpesvirus infection. It is one of the oldest diseases seen in fish. As the disease weakens the fish with infection and lesions, it leaves the fish susceptible to secondary infections by other microorganisms. The fish also become disfigured by the disease. This disease usually affects carp and koi, but can also infect other types of fishes, and...

PetMD Editorial

Medical problems are not always the cause of aquarium or fishpond emergencies. Instead, they often deal with environmental issues. Reasons for EmergencyThese environmental issues may include: LeaksSpillsElectrical problemsFilter problemsHeater problemsPump problemsDirty aquatic environmentToxins found in the water (i.e., chlorine, ammonia or nitrite)Bird or animal attacks, when dealing with...