I've got a bit of a problem with rosy red minnows in my pond. I put
them in the veggie filter to add a little bit of color and movement.
However the little guys escaped into the main pond and are way too
aggressive with the shubunkins (fin nipping etc.). I tried a net but
their incredibly fast.

Does anyone know how to build a trap for these guys so I can put them
back?

thx