It means you have a spotted fish...CONGRADULATIONS
A graviid spot is a dark grey spot at the back of the stomach. It is a sign to tell you that your fish is pregnant
if a tick has a spot on it then it is a lone star tick
spot fish mostly eat shrimp and other small fish
Your hamster goes bald and grows a black spot on its back because it is about to die.
the color of the gravid spot does not have to be black.it could be red becuase 1.color of the mother 2.she is still in the early stages 3.there are only a few fry 4.the position of the fry(eyes=black body=red)
To determine if your platy fish is pregnant, look for a swollen abdomen, dark spot near the back fin (gravid spot), and a boxy or square appearance. Pregnant platy fish may also exhibit changes in behavior, such as increased hiding or aggression.
With a guppy you need to look at the gravid spot. This is a dark spot in the fish's belly. A large gravid spot indicates the fish is likely to be pregnant. You can tell how pregnant the fish is by how large the spot is. Sorry I have no experience with other species.
I have an incomplete answer for this. I just got a tattoo of a koi fish that I designed (without the spot). I got it done in Japan and the tattoo artist decided to add it. He explained to me that it when a koi fish gets older...something something...and that it was very japanese. I has something to do with the aging or wisdom of a koi fish.
They are shy!
The gravid spot on a platy fish is a dark spot near the fish's anal fin that indicates pregnancy. It is caused by the darkening of the skin due to the developing embryos inside the female fish. By observing the size and darkness of the gravid spot, one can determine the reproductive status of the fish and whether it is pregnant or not.
A white fuzzy spot on a fish could be caused by a fungal infection.
it means that the earth will travel one spot and back to that same spot in 1 day