Trout seem to do very well on brine shrimp over the winter in some WY lakes, which suggests to me you might look at crustaceans to help establish a forage base in your new pond. I think scuds do well during the winter. I don't know what Daphnia and the various species of shrimp (other than brine shrimp) do, but there probably are people on the forum who know such things.
