i am considering having 1 or 2 seahorses, i would have them all alone by themselves in a tank. i DO NOT want to raise them. that said, should i have just one? i have a wrasse (rainbow?) that i know females can change there sex to male if i had a few of them). do seahorses also do this? i understand they are not the easiest to take care of and care for, so i am looking for the FACTS and care tips as well as the easiest species to care for so info on tank size, water quality, lighting, etc. would be greatly appreciated. thanks in advance