I have a few questions about most of the fancy species of goldfish. (not comets or commons that can get way too big for me to handle),
How many of them can I fit comfortably in a 40g Breeder tank? I am not planning on setting up this tank anytime soon, but a few years from now I will have a free 40g breeder. I am interested in setting up a goldfish tank.
I DEFINITELY want 2-3 black moors, but would like at least one other variety of fancy goldfish.
Would this be possible and what other fish can be kept with a cold water species of fish like the goldfish?
I am aware overstocking can be detrimental especially where goldfish are involved. Even though I am not planning on setting this tank up anytime soon I love researching about these things :)
Also what type of filters would be the best for Goldfish? Power? Under Gravel?
Anyways, thanks for the responses ahead of time :)