I do not feed the fishes. The owner at Fin Farm in Ridgeville Corners, where I purchased the stock, commented that it would not be necessary since we filled the pond with water from a nearby ditch when the water was high and flowing rapidly. We placed a fine screen over the discharge pipe to help filter out or destroy unwanted eggs and such but he said that this water would contain enough nutrients to establish the stocked fish. Frogs and tadpoles are very abundant and I have come across turtles and crayfish on occasion. Since the original stocking has been 15 months ago, what numbers and size of BG would be appropriate? Should I consider supplementing feed for the LMB? The LMB have grown to 5"-6" as is.