we've decided to seperate them because shirley is acting totally out of character.she is now in our 60 gallon tank with a black ghostknife,a polypterus,a blueberry loach,and 4 gouramis'.laverne is in our 30 gallon tank with our mollies,our swordtails,and our newt.i'll let you know how everything turns out.thanks for everyones' advice.