Hi! I would like to add platy's to my tank. I have a 55 gallon tank with: 1 bristlenose pleco, 5 zebra dannios, 2 glowfish dannios, 6 cardinal tetras, 2 black skirt tetras, one guppie, and one dalmation molly. I would like to add platy's but I'm not wanting to deal with babies and such. Can I add one? Or one each of different kinds? What do you guys think? I'm new at all this, but I do know that my tank's water parameters are good, and I keep it at about 78 degrees.