No. It is a territorial thing.
Black Moores are simply a form of "goldfish' and they spawn exactly the same way. The males chase the females who release their ova which are fertilised by the males during the chase.
It depends, if the goldfish are all males (or females) no, but if not of course they can mate.
In spring time when the water temperature starts to get over 65F they will come into breeding condition. The males then chase the females around the plants at the surface of the water. In the excitement of the 'chase' the females release thousands of sticky ova (eggs) and the males release their milt (sperm) which fertilises them as they stick to the water plants.
The females lay eggs and the males fertilize them there is no sex involved.
During the breeding season (Spring time) the males will nudge the females to try to get a chase going. Once the chase starts, the males chase the females and the excitement grows, the chase gets faster, and the spawning begins.
Goldfish are coldwater fish. As their water temperature rises in Spring to over 65F the fish come into breeding condition. Once they are ready the males nudge the females and chase them. During the chase the females scatter adhesive ova (eggs) amongst the plants at the surface of the water and the males scatter their milt (sperm) over the ova which fertilises them. After spawning has ceased, the adult fish should be removed because they will eat their eggs and their young if they can.
simple take the males and females apart or get a tank divider
Females have a protruding anus, while males don't.
The males usually have longer pectoral fins, with firmer stomachs, and the females have shorter pectoral fins with soft abdomens. Females also have a tendency to be larger than the males. Male goldfish also develop white spots on their gills. the males anal opening is also smaller and more round than the females.
Where their poop comes out. If it comes out horazontilly, it is a male. If it comes out straight, it is a female. Males are the most common.
Actually, goldfish don't have a specific gender. They are born as females, but as they grow, they turn into males.
When goldfish breed, the male fish chase the females who dash around amongst the plants at the surface of the water. As they do this, the females release their adhesive unfertilized ova (Eggs) and these stick to the plants. The following male goldfish then release their milt (sperm) which is sprayed over and amongst the females ova. This results in the males "milt" comming into contact with the females "ova" resulting in the "external fertilization" of the ova.