I have 7 of those 27 cent feeder "comets" that they sell at petco, all of them about 4 months old, 6" long, just wondering how soon I need to keep an eye out for some eggs? ( I DON'T want babies...yet) Noticed one of them chasing another a little too playfully yesterday, and I think that may be what it is...but, I know little about goldfish sexual behavior...