Water-Bubble Eye Goldfish

Distribution:      The Goldfish, a wild carp originally known by such names as the Crucian Carp, Gibel Carp, or Golden Carp, was described by Linnaeus in 1758. They originated in Asia; Central Asia and China. Today domesticated goldfish are distributed world-wide. These fish inhabit the slow moving and stagnant waters of rivers, lakes, ponds, and ditches feeding on plants, detritus, small crustaceans, and insects.
     In the early 1600's these fish were exported first to Japan and then to Europe and were developed into the wonderful colors and forms of gold fish we see today. The Water-Bubble Eye Goldfish was developed in China, today there are more than 125 captive bred fancy varieties.

Status:      This species is not listed on the IUCN Red List, and presumably there are no wild populations of this captive bred variety.

Description:      The Water-Bubble Eye Goldfish, also called the Bubble Eye Goldfish, is an egg-shaped variety of goldfish. It is double-tailed and its body shape and size are very similar to the Celestial Goldfish, being a bit slimmer body than other egg-shaped goldfish. Also like the Celestial its eyes are upturned, though not as extremely. Fluid-filled sacks begin to develop as bubbles under its eyes at an age of 6-9 months and by the time they are 2 years old, the bubbles are very large. It is one of the dorsal less goldfish, though there is also a variety bred in China that has a dorsal fin. These goldfish are available in a variety of colors that include solids of red, blue, chocolate, and black; bi-colors of red/white and red/black; and also calicos.

Size - Weight:      Water-Bubble Eye Goldfish will generally reach about 5 inches (13 cm), though some hobbyist report their Bubble Eye's growing much larger.

Care and feeding:      Since they are omnivorous, the Bubble Eye Goldfish will generally eat all kinds of fresh, frozen, and flake foods. To keep a good balance give them a high quality flake food everyday. To care for your Bubble Eye Goldfish, feed brine shrimp (either live or frozen), blood worms, Daphnia, or tubifex worms as a treat. It is usually better to feed freeze-dried foods as opposed to live foods to avoid parasites and bacterial infections that could be present in live foods. Due to the fluid filled sacs under their eyes they can have poor vision and a harder time seeing their food, so need extra time to feed. When it comes to feeding, they will not thrive well with fast competitive tank mates.
     Bubble Eye Goldfish are some of the more delicate species of goldfish. Unlike the flat-bodied types of goldfish, they have a lower tolerance for pollution. They will need good care and plenty of space. Many people will keep goldfish in small one or two gallon bowls with no heater or filtration. But for the best success in keeping the Bubble Eye Goldfish, provide them the same filtration, especially biological filtration, that other aquarium residents enjoy.
     The shape and size of the aquarium is important and depends upon the number of fish you are going to keep. Goldfish need a lot of oxygen and produce a lot of waste.

• A large surface area of water will help minimize goldfish suffering from an oxygen shortage. Surface area is determined by the shape of the tank. For the same volume of water, an elongated tank offers more surface area (and oxygen) than a tall tank. In a fish bowl, filling the bowl to the middle offers more surface area (and oxygen) than filling the bowl to the top. Always provide the maximum amount of surface area.
• Providing a large amount of water per fish will help dilute the amount of waste and reduce the number of water changes needed.
• A general rule of thumb for young fish only is: 1 inch of fish (2.54 cm) per 1 gallon of water. This rule applies only to young fish and is not adequate as they grow. Larger gold fish consume much more oxygen than young fish so maintaining this formula for growing fish will stunt them, and can contribute to disease and even death.
• Keep the tank size and shape in mind when you are buying your fish. To allow for growth, either buy fewer fish than the maximum number of fish (based on the above formula) or be prepared to get a larger tank.

     Because goldfish produce a lot of waste, good filtration is very helpful in maintaining the water quality of the aquarium. Be careful of filter intakes, if there is a strong water flow the bubble sacs of these fish can get sucked into it and burst. Adding some soft sponge filter media over the intake valve can help. Regular weekly water changes of 1/4 to 1/3 is strongly recommended to keep these fish healthy.
     Use a smooth gravel substrate. You could add some decor but keep in mind that its fluid filled eye sacs can be a problem, both easily damaged and giving these fish poor vision. Make sure that all ornamentation is smooth with no protruding points or sharp edges. Live plants would be the best decor choice. Artificial plants make a good substitute if they are soft with no sharp edges, with silk plants being the safest. Other decor, such as smooth rocks, should be used sparingly if at all. A cover for the tank is desirable as it reduces evaporation and though they are not prone to jumping, on occasion some gold fish will jump out. Most aquariums come with a cover that includes lighting. It is not essential for goldfish, but will help if you have live plants.
     Goldfish are subject to the same diseases as tropical fish. A couple of the more common problems are Ich, Swim Bladder disease, and external parasites including flukes, lice and anchor worms. To learn about these and other diseases and how to treat them see: Aquarim Fish  Diseases & Treatments.

Acceptable Water Conditions: Unlike the flat-bodied types of goldfish, they have a lower tolerance for pollution and cannot tolerate temperatures much below 60 ° F (16 ° C).
     Temp: Goldfish are a cold water fish and will do best at temperatures between 65 - 72 ° F (18 °- 22 ° C)
     Hardness: 5 - 19 ° dGH
     Ph: 6.0 to 8.0

Social Behaviors:      Goldfish are very social animals and thrive in a community. Not only are they a great community fish but they are great scavengers as well. When choosing tank mates, keep in mind the physical traits of the Bubble Eye Goldfish. Like the Telescope Goldfish and Celestial Goldfish, the Bubble Eye can be visually handicapped. Further its swimming ability is cumbersome because of its rounded body and the lack of a stabilizing dorsal fin, a trait that is also seen in the Lionhead Goldfish. While the Bubble Eye cannot readily compete for food with fast swimming types of goldfish, these similarly handicapped varieties can make good companions. It is really not necessary to add other scavengers or other bottom feeders to the aquarium when you have goldfish.

Sexual Differences:      Although is it impossible to sex Goldfish when they are young and not in breeding season, the male is usually smaller and more slender that the female. In the breeding season the male has white prickles, called breeding tubercles, on its gill covers and head. Seen from above the female will have a fatter appearance as she is carrying eggs.

Breeding/Reproduction:      Goldfish are egg layers that spawn readily in the right conditions. See Breeding Freshwater Fish - Goldfish for more information on breeding Goldfish.

Availability:      The Water-Bubble Eye Goldfish is readily available and is inexpensive.

Author: David Brough. CFS.