Stocking definitely Ill bet most people overstocked their first tanks and I wish I new about cycling when I set up my first tank had no idea you needed to build up beneficial bacteria. My first tank was a 20 gallon with 2 variatus platies, 2 mango swordtails, 2 cremsicle mollies, and 2 black neon tetras. 1 male and 1 female of each, I put them in on day 1 and probably didn't change the water for a month, until i found a dead fish, because I didn't know any better.