Hello.

Thank you Mr Cody.

No I don't have Fingernail clam in the pond.
I was wondering if it would be good to put some.

Although the water is very cold 4c, there're a lot of Daphnia, but I see they are starting to make a lot of Ephippia.
[Linked Image from i.ibb.co]

I culture Bursaria truncatella with Paramecies and volvox.
A+