Um, Just curious, how do you know when your fish is pregnant? I've noticed perhaps that Sonorus was getting a little bigger around the middle.. not sure though.. how do you know? What should I look for? Also Tiger is following Sonorus around. normal?

The male will chase the female relentlessly while nudging her tummy. The female will become rounder in the belly. After about a week of that, change 25% of the water, as this will encourage the female to lay eggs. Provide some spawning material such as a loose floating plant like hornwort. Hopefully she will lay most of the eggs in the plant, as eggs that fall on the gravel are prone to fungus, and those that get caught in the filter aren't likely to survive.
If it looks like they're dancing in the water together and ignoring the other fish, it's likely that they are preparing to lay eggs. Changing 25% of the water and giving them spawning material will help to encourage them to lay.

(They like to lay eggs at around dawn, so keep an eye on them in the early morning. If they lay eggs, remove the parents from the tank before they recover from their exhaustion and begin to eat the eggs.)

You know that it would be quite tricky to raise goldfish fry
For instance, you'd need to make sure to have fresh brine shrimp nauplii to feed them with daily, meaning that you should buy eggs and hatch them to feed your fish with, so they'd grow well and you'd need to do frequent water changes in the "baby" tank since they need to eat a lot... not to mention that you need a separate baby tank! Or else their parents would eat them.
Secondly, as the 500 goldfish children would grow, you'd need to separate them and place them in other tanks... you'd also have to cull the fish at some point and remove the undesirable ones since you probably don't want to keep 500 goldfish c: That would mean about 5000 gallons of water, right? xD

So... I dunno, to raise good and healthy goldfish would take tons of time and effort. But it is of course possible if you only want to

By the way, I don't know if it would be such a good idea to have a comet hybridize with an oranda... xD (Sonorus is a comet, right?)

Actually... (: It might just be an interesting combo C:

AHA! Tiger isnt oold enough to show those white puberty spots during spawning! they usually only appear after the fish is a year old (or so the pet store says). Tiger's only a few months at least

Pluck off one of their scales and look at it in a microscope. Then count the rings on it.
Because, unlike many think, it's more or less impossible to try and tell the age of a goldfish based on their size, as their growth depends a lot on their genetical background, how much they were fed and what during their first months and how big tank they were kept in.

It's actually 11:46 We switched to summer time yesterday (: I hate that! D':

Yeah, I think it's better to do it that way, ask about how old the goldfish are when they get them to the shop and then it should be rather easy to estimate the rest!

that would be good to know. Ive started feeding my fish algae disks an dtubeifex worms a couple times a week just to get in their protein and veggies. I hop etiger gets big