Year round, but especially in Spring for pond goldfish.
Goldfish do not have a breeding season. They can breed whenever the water is warm enough. In an open pond, this would be in the Spring and Summer months. In an indoor aquarium this can be year-round. Thank you very much for your answer!!
Spawning is breeding goldfish
== == Sexing Goldfish outside of the breeding season is extremely difficult. In the breeding season males develop small white pimples (breeding tubercles) on their gill covers and along the edge of their front fins (pectoral fins). Females are generally more rounded and deeper in body shape as they fill with roe (eggs) and have a larger vent before the anal fin.
Firstly, sexing young and juvenile goldfish is virtually impossible, you have to wait until the fish reach breeding age (usually one year old). Secondly, sexing adult goldfish out of the breeding season is difficult, because the sexually distinguishing features only develop during the breeding season (in the spring time). That said, females may be deeper in the body than males.
In looks or behaviour outside of breeding season, no. During breeding season the female may get a bit fatter with eggs, and the male will get breeding stars on it's gill plates and sometimes along the pectoral fins.
Sexing Goldfish outside of the breeding season is extremely difficult. In the breeding season males develop small white pimples (breeding tubercles) on their gill covers and along the edge of their front fins (pectoral fins). Females are generally more rounded and deeper in body shape as they fill with roe (eggs) and have a larger vent before the anal fin.
getting more goldfish in your tank
Sexing Goldfish outside of the breeding season is extremely difficult. In the breeding season males develop small white pimples (breeding tubercles) on their gill covers and along the edge of their front fins (pectoral fins). Females are generally more rounded and deeper in body shape as they fill with roe (eggs) and have a larger vent before the anal fin.
Spring time is the breeding season for goldfish. During this time female goldfish will put on weight, and male goldfish will develop breeding tubercles (white dots on the head and gills). Goldfish may chase each other around the habitat in an effort to find a mate. When a male and female goldfish choose a mate the female will release her eggs onto the breeding ground (such as an aquatic plant, or breeding mop). The male goldfish will then release a cloud of Milt (sperm). The milt thus fertilizes the eggs, and goldfish fry begin to form within the eggs. The goldfish eggs will continue to develop for several days until they eventually hatch into fry. The fry will then grow into fully developed goldfish overtime. These goldfish will eventually reproduce, and thus continue the life cycle.
During breeding season the female may get a bit fatter when full of eggs, and the male will get breeding stars on it's gill plates and along the pectoral fins. These look like tiny white bumps.
Goldfish of both sexes can be happily put together usually without any problems. During the breeding season male fish may chase the female but in general they are very peaceful.
In breeding season the males develop white spots on their gill plates. The females become plumper around the abdomen.