A goldfish.... the difference is hard to spot (especially with modern varieties) you can with a trained eye spot the differences the in ventral fins between male and female, even then it isn't really easy to do without watching the fish spawn (which one lays the eggs)
Like goldfish
because it is a goldfish stupid
They are a fancy goldfish (Carassius auratus). They were bred to have scales that look like pearls.
They look like they are tired but they aren't :)
YES
a female goldfish
the girl is bigger
Shubunkin is just a fancy name given to a specifically coloured Goldfish. Breeding one with a Golden coloured goldfish will result in about 33% that look like a Shubunkin and 33% that look like a Golden coloured goldfish and 33% that look like a mixture of the two. The above results would only be accurate if the breeder fish are properly line bred and their lineage is guaranteed. Otherwise you could get anything from coloured goldfish to uncoloured goldfish and a mixture of any kind of goldfish including Comets, Fantails and Veiltails.
junk
Like a gilbert that's what i named mine!
Goldfish do not get pregnant. They are egg layers. A female goldfish looks a bit chubbier than normal around the tummy when she is in breeding condition.
No. They stay gray their entire life.