how do you tell if your goldfish is a boy or a girl?

Question

I just wanted to know if you can tell easily if your goldfish is a boy or a girl does anyone know?

Answer 1

"I Be" is correct about the breeding tubercles, and there's a difference in the shape of the vent when the fish are in spawning condition. See this link for photos of what these features look like: http://www.bristol-aquarists.org.uk/goldfish/info/sexing-fs.htm

The fish need to be mature (at least a year old), and in breeding condition - otherwise they all look like females.

Some websites and people will say there are differences in the body shape, fin shape, midline ridge presence, and other ways, but there are so many varieties of goldfish that show such a range of these characteristics that these aren't very reliable.

Answer 2

I copied this off a website and below is the link to the website it has pictures to explain it so it might help you

Midline ridge: Males develop a ridge on their undersides that starts in back of their pelvic fins and ends at their vent opening. The ridge is absent or much smaller on females. (N.B. I have observed females with impressive ridges. Hmmm)
Firmness of Abdomen: For my heavy-bodied goldfish, the area between pelvic fins and the anal fins is fairly pliable on the females. For the males, this area is usually very firm
Pectoral fin shapes: For short-finned varieties, males have longer, more pointed pectorals with a stiffer leading ray. Females have more rounded pectorals and shorter, finer front fin rays. For long-finned breeds, the fin shape is hard to judge. But the first ray length and thickness should still be somewhat different. This works pretty well.
Other features: Some other characteristics that I think would be very hard for beginners to make use of: males are alledgedly brighter colored, more active, and have longer fins.
Using a known female: Al Foster suggested introducing a fish known to be a female into a tank of goldfish of unknown sex. He says that the males will all "check out" the new female, while the females will show no interest.

Answer 3

* The female Goldfish are slightly bigger than the males and look even heavier in the abdomen when they are full of eggs. * Male Goldfish develop white spots on their gills and pectoral called “breeding tubercles” during spawning time. * Males have midline ridges on their undersides beginning from the back of their pelvic fins and ending at their vent opening. This feature can be absent or smaller in females. * Males have firm abdomen while in females; the area between the pelvic fins and the anal fins is more pliable. * Male Goldfish have longer and pointed pectorals as well as stiff fin ray, while females have more rounded pectorals and shorter, finer front fin rays. * Male goldfish have smaller and more oval anal openings and the anal fins are not as thick as that of the female goldfish who has a larger and rounder anal opening with a slight protrude. The anal fin is also thicker. * The spawning time is the easiest time to distinguish the boys from the girls. The female opening will look larger and more swollen as the eggs begin to ripen. She would look big and heavier. Since fish reproduce through external fertilization, you can make out when a male is ready by the white breeding tubercles and you can actually push out the milt through his ventral opening by running a gentle finger along his sides. * There is one more obvious, but kind of time taking way to make out which one of your fish is male and female. Find out who is chasing who – the chaser will be the male and the chased and tired out one will be the female! It’s the natural tendency on part of the male goldfish to chase and nudge at a female’s rear part.

Answer 4

It’s virtually impossible to tell the gender until they are about to spawn. There are certain tell-tales, but these have shown to not be very reliable. When the triggers for spawning approach, it's much easier. The female will start to produce and retain eggs and she will appear rounder and "fatter" than before. The male will start to show tubercles, these are white raised "dots" on his gill covers. Until these are triggered, there really is no way to tell which goldfish is male and which is female without genetic testing. People guess but are wrong half the time.

Answer 5

they are sexually dimorphic, they look alike. when they are ready to lay eggs, there organ will come out.

Answer 6

does he have a dick