I have two streams on either side of the main pond area. I really liked the natural look of streams. However, they're both good and bad... The fish love traveling up stream and taking a ride back down into the pond, or heading down stream to hangout under the driftwood stump. my only concern has been with Heron and Raccoons. The fish become much easier prey in the shallower waters. I seem to have deterred the heron at this point and testing a raccoon deterrent at this time that seems to be working. The dragonflies spend all day just running up and down stream. really cool to watch.