It would be about 30 gallons.
Answer:
128 ounces = 1 gallon (US)
1 cu. ft water = 62.4 pounds
Described tank = 4.37 cu. ft
4.37 cu, ft = 273 lb
273 lb = 34.125 gallons
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231 cubic inches = 1 US gallon
Volume = 20" x 18" x 21" = 7,560 cubic inches = 32.727 gallons (rounded)
27.429 gallons for each inch deep.
No, Neon Tetras and Goldfish do not belong in the same tank. Goldfish prefer cold water, while Tetras are more of a tropical fish.
Not very many. As a very rough estimate of what you can fit, you can have a total of 10 cubic inches of fish. Of course, you don't want to get a fish that will grow very long. Any fish you get should be 3 inches (about 7 cm) long or shorter. Here are some tropical freshwater fish you might be interested in: * Small tetras (neon tetra, cardinal tetra, ember tetra, x-ray tetra, lemon tetra) * Guppies * Mollies * Zebra danios (tend to be fin-nippers, so don't put them with long-finned fish) * ONE betta (siamese fighting fish) * Gourami (should only keep one in a tank, but they can be put with other kinds of fish) * Invertebrates such as shrimp and snails * African dwarf frogs (up to 2) Most of these fish like to be kept in schools of 6 or more, so at most you could keep 2 different species comfortably in that size aquarium.I have the same size tank. I keep zebra danios and neon tetras, and some ramshorn snails, and they all get along pretty well.
Different species have different life spans. Most schooling tropicals live a few years. Bettas live for about 18 months, larger fish can live to there twenties. some koi have made it to 50
Halibut
Most breeds of horses have 18 ribs.
18 gallons
18 gallons
Approximately 30 U.S. gallons
18 gallons
About 18 to 20 Gallons
it comes with 18 gallons fuel tank.
About 18 gallons.
A bit less than 75 US gallons.
18 gallons
i have an 88 wrangler that holds roughly 18 gallons.
18 to 18.5 us gallons
18 or 19 gallons