Feeder sized goldfish are usually months old. Even at the same age, they vary a lot in length. They grow rapidly during the first year, but the growth rate varies a lot even for fish from the same spawn, so the size of year old goldfish varies widely. Almost all of the goldfish you see in the big box pet stores are well under a year in age.
If you guess your fish were 4 months old when you got them, you won't be far off. All this is true. The size is not a great indicator but goldfish raised to sell in stores generally not going to be old fish. It is like raising cattle. You want to get them to markets ASAP. I suppose once in a while you might get a retired breeder that is older but it would be the exception. Dave Both goldffish and koi have teeth on the lager koi they are remarkably human molar type teeth from time to time they shed them and if your lucky you can see them in filters the bottom of your filters, you can bet your bottim dollar that they have spent around 2 - 3 years in the fish farm before being sold, In the case of some koi even longer is spent in huge mud ponds growing on to full size before being sold.
I like taking them from around about 3" and growing them on to 24" before selling them on to be grown on in larger ponds rgrds Dave. Dave 54 said:. Both goldffish and koi have teeth on the lager koi Click to expand So, I guess it's safe to guesstimate that most of my fish are just coming on their first year birthday. They are all different sizes, though there are 3 comets and one fantail that are obviously larger than the rest.
I know the fantail and [at least] one of the comets were among my very first purchases, so it makes sense that they'd be larger. Mainly, I was just curious, as I have no idea how the "fish trade" works. I would at least assume that sellers are going to wait until the fish are large enough to have color and have an idea of their body type.
Wow, so that means goldfish grow pretty fast from the fry stage! My thoughts are where goldfish comet and shubunkins anyways are so cheap, the commercial growers are going to want to move them out as fast as they can. HTH said:. That goes for most all goldfish. And some use drugs to get them to look grown up sooner too. Sad really. Goldfish can live for over 40 years, with the oldest recorded in the Guinness Book of Records being an amazing 43 years old.
Determining how old they are is very difficult, particularly with goldfish that are kept in an indoor aquarium.
Size is no real guide as this is impacted by the genetics of the fish and the amount of water it is given to live in. Colour is also of limited use. Grant's Reply Hi Pat When giving a Goldfish's size, you need to quantify it a little further by adding whether the measurement is body length or total length.
There are so many fin variations, I only give body length measurements throughout the website. Many enthusiasts discuss their 6 inch Comets, but in reality they are 3 inch with 3 inch tails.
Fancy varieties grow outwards as much as in length, so a 3 inch Veiltail is likely to be 12 months old, but a Comet can achieve that size in a few months. So I will make a few assumptions to answer your question. I don't know if the fish you are referring to are imported or bred and raised in Scotland. The growing season isn't very long, so I suspect the minimum age would be 12 months old or last season's fry.
If they have been stunted, they could be older. Look for how developed the breeding tubercles are on the males.
0コメント