Clear specimen cups have always done the trick for me when it comes to hard-to-catch fish. Place the container on its side on the bottom of the tank, and use your hand to "herd" /direct the fish into the container. Quickly pull the container up and out of the water when the fish has entered the container. No net needed. It requires some patience and practice, but in heavily planted tanks, it is usually a lot either than the traditional netting method.
I frequently utilized this method with plecos and other catfish when i worked at a LFS because their fins would always get caught in nets. Works very well with tetras too.