Yes, in the summer months. If you have an aquarium with a heater, turn the heater down to colder temperatures (remember goldfish can live in freezing temperatures, surviving fierce winters in outdoor ponds, although I wouldn't recommend putting your goldfish through that if it's avoidable.) and after your aquarium water is cold for roughly a month begin to heat the water back up (do this gradually over 2 weeks or so as to not cause shock to them) and then when the water is hot they'll believe it's summer and it'll be egg-makin' time! Do some research on what kind of conditions a fry(baby goldfish) needs to survive. but that's the basics of it. Time of year is a factor!
A Piranha can breed up to 200 times a year
they breed 1 million times a year
Under normal conditions Goldfish spawn only once a year and that is during late Springtime. Goldfish can usually breed when they are about 2 years old.
Rabbits can breed multiple times throughout the year, with some breeds able to breed every 30 days.
There is no size requirement for a goldfish to be mature enough to breed. The reason I say this is because so very many goldfish are so badly housed and treated that they may become fully mature but only a couple of inches long. Goldfish can usually breed within a year from hatching if they are well looked after.
once
Different species breed at different times and with differing time frames. Goldfish normally spawn once a year in springtime.
I would say once a year!
Only once.
a buck can breed about once a day and a doe shoud only be breed about once a year
Like most animals - they breed once a year - usually in the spring.
They are Goldfish and so they mature and breed as goldfish. They can be sexually mature at 1 year if they have been well housed and well looked after.