catfish in a koi pond
I went out to feed my koi this morning and noticed two new additions to my pond. Two catfish. It was my son who had thrown them in, thinking everyone could live in harmony. Catfish at the bottom and the koi at the top. He thinks they will help keep the pond clean. I just want them the heck outta there for fear they could eat the smaller koi. As for keeping the pond clean, seems to me they would create their own waste anyway, so what's the point?
Anyone have any info on these creatures living together? How the heck do I get them out of my pond? Anyone want to come fishing at my place?!