I have a 10 gallon with a little Blue Lobster 3'' or so and i have another 10 with 3 crabs a red claw crab and 2 fiddler crabs all are about and 1'' to an 1 1\2'' i would like to bring it down to 1 if possible cause i also have a 30 gallon and am going to be setting up a 55 gallon soon, so how well or not well will they get along...