when i was really little my family had a tank, i think it was only like a 10g or something, i was too little to even remember what kind of fish they were, i only remember one was a chinese algae eater. didn't really get into fishkeeping then, however.
in middle school, my science teacher had TONS of animals in his classroom (saltwater tanks, freshwater tanks, brackish tanks, frog tank, chameleon cage, snake tank, mali uromastyx, bunny, geckos, even a snakehead tank for a short period of time).... needless to say, he needed some help with the animals. so everyday of the 3 years of middle school, a couple other people and i would come in an hour before school started and took care of the animals. i guess you could say my interest started there.
it wasn't until my senior year of college however, that i got my first real tank, a 55g and have no had it set up for about a year now