I went out to a ditch by my house to scoop up a few midas cichlids but instead i left with about 5 jewel cichlids ( with in two day period) ... With how amazing and attractive these fish are i took them home and put um in my very small pond on my porch( about a 100 gallons,im guessing, i like demensions of it though(5ft by 3 ft by 1ft deph) anyway my questions are ,1 will they live and get along in my pond with out killing each other? And 2 my main question how can you determine gender of them? Im guessing venting will be the way but wondering if any other way..Thanks!