thanks for comments . we have a net to cover whole pond in fall to catch leaves but remove it when leaves are gone . have another net on a couple of long poles that we unroll to cover about 85% of pond during summer , both have mesh about 3/4 inch square . first time we used summer net we came home to find heron standing in middle of net having ''speared'' our prettiest comet but unable to get it through the net . luckily the heron seems to prefer catching and eating chipmunks [ as i said some time back] and ,yes , i have a picture but don't know how to post them . looking on ebay i've found many sources for fishies but think we should wait another 5 or 6 weeks for water to warm , it's 24 degrees today , that's air temp not water . thanks again . . . peace