Hi, We had 4 goldfish in our pond (about 100 Gallons), and then some frogs came and now we have tadpoles.  Around the same time (probably about a month ago) we noticed Goldfish fries. 
They were doing great..  There are probably more than 10 of them that I have seen, but it is hard to see them since there is a lot of plants there as well and they hide a lot, so I don't really know how many for sure.  I was planning on waiting another few weeks until they got big enough to give them away. Some are now an inch or more long.

Today though, after seeing them being rather happy yesterday, I found 3 dead babies.  Tadpoles were eating the one that i took out and it didn't really look like they had any illnesses, but it looked like they were well chewed on.  We have a bubbler and lots of plants for Oxygen.

I just added some water, to fill it up a bit more, some bacteria (in case they are stressed), and took out some of the tadpoles along with some new eggs that those bunny like frogs put in there this morning.  I am going to go out today and clean the filter.   I don't want to lose any more baby goldfish they are so cute.  Anyone have any ideas why they could be dying or any suggestions?

nope no snakes or turtles. There are frogs, will the frogs eat them?

yes they do, but the Goldfish that survived this long are all about an inch long now and probably too big for the big Goldfish.  Plus the big Goldfish are probably busy eating the tadpoles.

I did see 8 babies still around though, so I'm hopeful... 

But if you found them dead it couldn't have been the frogs because I imagine there would be no evidence left over.

Hi Anna,
How are the rest of the babies doing?
The missing head, is a clear indication that something is eating the babies.  I know my sister has a turtle and he snaps the heads off rosy reds that she feeds him.
Just a thought, but you might want to catch some of the rest of the babies and put them in a tank in your house if you want to save them.

Hey,
The rest are doing well.  I moved 3 of them out to a neighbor's pond, which is much bigger.  They were REALLY hard to catch.  I tried to get pictures of them too, but they are camera shy   I did attach one with one of the small babies.

I still have no idea what did it, it was weird that it was 3 in one day and 1 the next, but since then they have all survived and are happy... but they'll need more room soon.

Beautiful pond indeed! (: So nice with all the plants, I bet the fish are loving it in there!
Hope the rest of the babies will be alright now (:

Good to hear all the fishies are doing well!!!! Love to hear how they are growing!