i've had 3 gobies, and they're all extremely skiddish. a dumb nassarius snail that's buried in front of the goby will render the goby dumb. my randalli goby was freaked out by a small hermit crab that had sat in front of his hole. A flake food hit him in the face, and stayed there. He wouldn't eat it. Then the flame angel came by and picked it off his face.
Later when the hermit left, I fed the goby again, spot feeding (which takes so much effort) and he ate the flake. But then the nassarius smelled the food, and came over, this time I squirted the flake right into his face again, and he didn't budge.
So stupid! So frustrating! I don't know why =( I'm just unlucky.
So I told myself to never try to feed the gobies again. if they're hungry enough, they're going to have to fight for food.
somehow they both swim out for flakes / brine / mysis whenever I feed. which is a bit better. but they're skinny, and only eat to keep themselves alive.
=P