I picked up a new diamond watchman from the LFS
the other day. I don't have aggressive fish in the tank, but he insists on skimming the top, the jumps into my overflow box (it's a BeanAnimal overflow box, pix can be seen in my album). He's in no danger in the box, but it would be nice to have him find the pistol shrimp in the tank and pair up. Every time I put him in the tank, he goes right back into the overflow and chills out.
Has anyone else seen this behavior from their goby? Does he just need more time? I'm thinking of grabbing an additional pistol shrimp tomorrow and letting them pair up, even though there's already one in the tank.