digging

I had this Diamond Goby for a few months now, he loves to hide shells and make holes everywhere. This evening I saw that my kenya tree coral was missing from it’s usual spot. I looked around and saw that the Goby moved the whole coral into it’s hole. It literally moved the whole rock it was...

We have had our dottyback for a few months and he’s always stayed in a little cove and swam throughout the rockwork. Today we noticed him going under a rock and digging it out and spitting the sand toward the back of the tank. Is this typical behavior for a dottyback?