- Both common (straight tail) and ... reduce stress, and allow goldfish to grow to their full size. Goldfish should never be kept in bowls or very small tanks....
- Common or singletail goldfish can easily live in excess of twenty-five years while fancy varieties should live at least ten to fifteen years. Theyre going to be spending a long time in a tank so it needs to be big enough to provide enrichment, things to do (dcor to play with, plants to swim around in and snack on) and keep them interested for many years. Spending two decades in an environment thats too small and has nothing to interact with will not be a pleasant experience.
One goldfish can be just fine with a small fish tank of 20 gallons or so. When considering additional fish, youll need to either look at getting a larger tank with more space, or moving to several small tanks where your fish can live separately.

First, prepare the water that will go into your Goldfishs new home in a separate container. Goldfish prefer a temperature of 70 to 75 degrees Fahrenheit. Add the water conditioner, following the instructions on the label. Add the aquarium salts and test the pH level. If you need to adjust the pH, add the required amount, following the
- If you like the goldfish colors, but would like something smaller, you can look at orange guppies or endlers maybe? My favorite color is orange, so I love fish that color. ... Ive never had a goldfish in my 75 gallon but I have a red devil around that size. But still I know goldfish are very active and you might need a pond or a 6 foot tank for the longest life
As we can see from the illustration, Small Tank Goldfish Needs Advice has many fascinating aspects to explore.
- Goldfish will survive in a small tank because they are almost impossible to kill - which is why they are so popular. If you are happy with an animal 'surviving', then go for it. Goldfish like to swim.