How can you now how old a goldfish is?

Answer 1

Its really a jugment call the longer you have fish in a tank, or choose to breed fish the more knowledge you will aquire in being able to determine to some degree how old a fish, or school of fish might be,if a fish looks old it probaly is, length and width will get you somewhat close combined with a good close once over visual. If you have any fish books you can find what type of fish you have in the book and the book will tell you every thing you need to know how long the fish will get when it gets to a mature age. Some fish live a long time.

Answer 2

Usually by its size. If you go to a pet store and see the different tanks Ex.) Small Black Moors, Medium Sized Black Moors, Large Black Moors. Usually the smallest ones are babies, but don't be fooled by the medium size. They can range from anywhere from a baby to an adult goldfish. If you did not just get it from a store, and you got it as a gift or something, here is a chart.


1 inch- 4 months
2 inches- 6-7 monthes
4-5-6 inches- 1 year

Answer 3

Bettas don't live long. At 10 to 12 months they are in their prime by 18 months they are considered "Old". Experience, observation and guess work are the main ways of assuming the age of a Betta.

Answer 4

Well, usually fish are in the pet store when they're about two weeks old, and usually stay in the pet store for about two more weeks. So figure out how long you've had your fish and add 4 weeks.

Answer 5

It depends on the size... If its smaller than 1 inch its not a adults

Answer 6

it closes its eyes

( goldfish don't have eyelids, they never close their eyes). The fish will usually float to the top upside down)

Answer 7

They will either lay belly up or normally on the bottom of the tank or be belly up floating on the water or normally

Answer 8

By the scales it has?

Answer 9

The rings on a scale.