![]() 6 Endler’s Livebearers (more females than males, M-F 1:2 ratio).So, if you’re stocking a 20-gallon tank, here are some popular fish combos to consider: Combo #1 For example, the pea puffer is an unsuitable tank mate in a small aquarium because they are highly territorial or aggressive, despite only being 1.4 inches long. It is best to choose peaceful fish if you want different species living together harmoniously. A school of smaller fishes can occupy the rest of the tank along with a few calm bottom dwellers such as shrimp or catfish. Having one or two larger “Centerpiece” fish is generally a good idea. Your aquarium will stay healthy and balanced by stocking your 20-gallon tank with different fish. Related: What filter is the best for a 20 gallon tank? What Are the Most Popular Fish Combo to Put in a 20-Gallon Tank? They prefer a tank temperature between 21-26 degrees Celsius (70-78 Fahrenheit). ![]() They can grow to be about 4 inches tall and have a lifespan of 5 years if you take proper care of them. Cory Catfish are easy to care for because they won’t attack other tank mates. They use their dorsal fin to point up and stay hidden when they feel threatened. This group of small fishes has bodies armored by bony plates and spines that can be quite sharp and sometimes venomous.Ĭory Catfish are peaceful, armored fish that have short faces, flat undersides, and pectoral fins. Keep in mind that Comets can grow up to 12 inches in length!įor a Fancy Goldfish setup, I would recommend a larger aquarium like a 55-gallon tank or 60 gallon breeder.Cory Catfish is a stunning freshwater option for 20-gallon fish tanks. Each subsequent comet you add would need an additional 12 gallons so for a 55 gallon tank, we are talking about 3 full-size Comets. We need to ensure an aquarium is big enough not only for them to have room to swim around, but also so you are not a slave to water changes.įor a common variety of Goldfish like a Comet, you will want to consider an aquarium size of 30 gallons and target at least 4 feet in length. That doesn’t sound like a lot of fish, but remember they get pretty big. This means a 40 gallon tank can hold 3 adult-sized Fancy Goldfish. After that, it’s roughly 10 gallons per every other Fancy Goldfish. When sizing an aquarium for a Fancy Goldfish, you will want to start out with a tank size of 20 gallons for a single Fancy. Given their adult sizes, it’s no wonder they were originally kept in ponds. Some have grown as large as cats in rivers! That is a lot of Goldfish for a tank! Goldfish also have a lot of mass, especially the Fancy types. In fact, the Common Goldfish can grow up to 10 inches in size and Fancy Goldfish can grow up to 8 inches in length. You may purchase them as young new fish for your fish tank, but they will get large. You may see Goldfish bowls everywhere, but bowls are not big enough for the long-term. Goldfish do not belong in a Goldfish bowl. I’m going to say it upfront to my readers. This video by Aquatographyprovides a deep look into the origins of goldfish. Goldfish were imported to North America around the 1850s. They were highly regarded for their scales and it was tradition for a man to give his wife a goldfish on their first anniversary to symbolize the prosperous years to come. The breeding of the fancy Goldfish varieties did not begin until the 1600s starting in Ming Dynasty China. The Goldfish was born at this time as an ornamental pet. They began to keep these colorful fish in their ponds. These flashy-looking new fish caught the eye of Buddhist monks in the 9th century. If these fish were in the wild, they would get quickly eaten by predators since they stood out so much. Genetic mutations would occur with the carp and these “mutants” would end up with flashy red, yellow, and orange colors. ![]() It was one of the most common staples of meat in China at one time.Īs carp continued to be bred for meat, a strange thing happened. Their original colors were silver-grey and they were known as “chi” in the East. Goldfish are the domesticated version of wild carp from East Asia. Goldfish used to be what was for dinner in China, their area of origin. One crazy fact about Goldfish is that they were first kept for their meat. Slim bodied are more athletic and can live in ponds
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