It is interesting that you both saw this non-schooling behavior. It is so interesting to see their personalities. I will definitely pay attention to their changing behavior as they grow, and watch for schooling next month.
I feed the babies Hikari First Bites, which they seem to like. I also give them frozen baby brine shrimp about every 4 days or so, but I actually saw fish spit them out on two separate occasions, so I'm not sure they like them. I also put an adult sinking Pro-Gold pellet into their dish once in a while, just in case they become ready for it. Any thoughts on when this should be? At this point, I'm not sure who is eating it - probably the tadpole. The tadpole gets spirulina algae tablets and shrimp pellets, and I've seen the goldfish poking around his dish, too. And they have algae on the back wall of the aquarium which is always of interest. A few times, I saw a little fish tearing vigorously on the hornwort.
I know, I know, I'm not supposed to have the tadpole and the fish in the same tank. But it's such a nice, large green habitat, and I hate to ruin it for anybody. Frogs are apparently very hard to keep, too, and I hate to make a change. I want frogs in the pond very much. On a frog forum, they warn me how much ammonia goldfish produce, and here I read it is not recommended. But in truth, nobody seems to bother anyone, and nobody's been eaten. My only concern is when he gets a big frog-mouth (maybe a month) and could actually go after the fish, but if they grow this fast, I probably don't have to worry. In any case, they will all have to live in the pond eventually anyway. Right now, he's huge and bumbling, and the fish are very fast (just like their parents!)
It will be interesting to see how their colors change. When I got my first "feeder fish" in December, I think they were about 1/2 inch longer than these are, and they were orange. It will be interesting to see these change - or maybe they will stay chocolate-colored.