Ive been researching saltwater tanks for a very long time now and i think i know just about everything i need to start my tank. but when i started deciding on which fish to put in, i realized that i knew nearly nothing about these fish. i know that damsels, mollies, and clownfish are good beginnner fish and angels and butterflies are not. i came up with a list of fish that i would like in my tank but i have no idea if they will get along. the last thing i need is for my fish to be fighting.i also dont know whether or not these fish are easier to care for and how many i should be able to fit in a tank. i have a 30 gallon tank right now but if need be i can use my dads 40 gallon tankeven though i would rather not. Will some one please help me!!!!!!!!