When I got my F1 kelberi I noticed he was quite skittish and jumpy. My monos used to quite out going but ever since i put them with my kelberi they, like him, jump and splash around when I go near the tank. I also find I have to take a couple steps back during feeding otherwise they are fairly reluctant to take any prawn. Is there anything I can do to make them normal or is it a phase they are in as juvies (8")?