WOW pod beggers ! turn off the lights in your tank and in the room your tank sits in then put a bright light next to the tank and wait before you know it you'll see pods on the glass next to the light. I forgot to turn of the kitchen light one night nad when we came home it looked like the glass was moving.
oh yea a mandarin gobby will eat your pods. and look good doing it. and for the record My M gobby and niger share a hole in the rock work.