I have never kept the adults once they hatched. The fry were always in their own setup.Hey Eagle Steve , thank you very much for the informative information . And thank you everyone with your replies to my post . I really love these uniquely bold and intelligent creatures and I feel fortunate that these goby s have felt secure in laying this cluster of eggs. I once long ago bred several tropical frog species most of which were dendrobates and enjoyed witnessing the morphing from egg to tadpole to frog . So I am very excited to watch the rearing of these goby s . I am curious if the adults will eat the larvae upon hatching ?