I think my sally lightfoot crab has killed my royal gramma and he is waveing his claws at my prcula clownfish.Are sally lightfoots supposed to be that aggressive.I am worried because he is in a 1.6 galllon nano that will be in the florida state fair for 14 days( I am bringing the tank to the fair tomorrow)will my clown die.I hope he doesnt because lots of little kids might see the tank and see "nemo" dead.