How do I feed these guys without them jumping out? As soon as I walk towards the tank, they start jumping and knock the glass lid! I have had to rescue Peanut Butter twice! He jumps right for my face. Also, I really want a Senegal birchir. Do you guys think I could have one in this tank? I have kept violet gobies before, but I understand birchir are obligated carnivores, so need to be fed a strictly meat diet. So, like shrimp and salmon? How do you meet their vitamin needs? I have fish vitamin powder, and I can inject this into my crickets before I feed them if needed. I have wanted one forever and finally have a big enough tank. I think my Oscars are big enough to not be lunch, and my lfs has the Senegals at 5 inches.