There are at least five little itty-bitty fish swimming around in there. I saw one today which was all of a cm long, the others are about two cm long.
I'm trying to think... these are either baby goldfish, or they are tadpoles.
On the one hand, I am thinking tadpoles, because a) I don't think the goldfish are big enough to reproduce yet, and b) they are brown, not typical goldfish colors.
On the other hand, they might be goldfish, because a) I always had one fish which wouldn't come to eat when I fed them right away, b) because I haven't seen any frogs around here, and c) I thought tadpoles had a bigger torso and belly.
I have no idea if baby goldfish are brown in color; I never tried reproducing goldfish before--not that I was trying this time.
But I was under the assumption that goldfish couldn't reproduce until they were about 10 to 12 inches in length. The ones I have now are only about five to seven inches long, and that's only if you count from the nose to the tip of the tail.
I have absolutely no idea how long it takes for goldfish to grow from this little size into a size which I can tell they are actually goldfish. If they are tadpoles, then they'll rapidly morph into frogs by Spring's end, because a frog's lifespan is so much shorter.
I guess for now it's just a waiting game.