Can't be sure that 6 is all that I have. But, seems like most days I can identify 6 that come in when I put out pellets. These things swarm in like a school of sharks and get more than their share of the food I put out.

I just want to be careful not to trade off using more food pellets or dealing with pond vegetation.

I see if I can post some picture in the right place when I figure this out. Thanks.