Urup, I saw the same thing as my pond is now 80% ice-free. Just as I neared the shore I saw hundreds of what looked like minnows but I've never stocked them, just LMB, BG and HSB.
This early, I too am wondering what they could be?
BTW, I do know there are BCP in there even though I pulled out over 1600 last year trying to "thin the herd". Surely they wouldn't have spawned yet?
Maybe an answer/response to Urup's question will give me an idea (until I'm able to net one).
Thanks!
Keith - Still Lovin Livin
https://youtu.be/o-R41Rfx0k0(a short video tribute to the PB members we met on our 5 week fishing adventure)
Formerly: 2ac LMB,HSB,BG,HBG,RES