Zero. Goldfish grow to be very large and are big waste producers. The smallest tank for them is 20 gallons, and bigger is better.
answered 7 months ago
Round Rock, TX
2out of 2found this answer helpful.
I believe that if u gather to many fish in one space it is not very healthy
answered 2 years, 5 months ago
1out of 5found this answer helpful.
Here's the thing about goldfish-- stores sell them as good "beginner" fish, when they're really not.
Goldfish get really big. I'm talking 8-12 inches here, and there's no way you're gonna be able to keep healthy, happy goldfish in such a small tank. A good guideline for fish is AT LEAST 1 gallon per inch of fish, preferably more. Those guys will quickly get too big for even a 15 gallon tank.
I'm really sorry to tell you this, but honestly, the best thing you could do for those goldfish is to give them away to someone with a pond. No one likes being told that they have to get rid of their beloved pets, but those poor fish will be stunted and will die a slow, painful death.
Once you get rid of them, you can populate your 10 or 15 gallon tank with some freshwater tropical fish, like a school of danios or tetras. They're really pretty and active, and look gorgeous against a planted background.
answered 3 years, 5 months ago
13out of 24found this answer helpful.