something fishy

anyone else have a fish tank as a kid? I did. It started as a 6th grade assignment of bringing an empty one gallon glass jug (I think vinegar came it then) to my science glass, fill it with dirt, some Eloda plants for oxygen, and then pond water containing natural something or other, and throw in some guppies and wallah, an "ecosystem". throw the lid on the jar and I'm sure every kid went a few months till eventually something died or went wrong or got to hot or cold etc etc... ha ha. Anyway, I remember mine living quite happily for a while. I don't remember much of anything after that other than I eventually asked the folks for a fish tank and a new tropical fish enthusiasm was born. I remember having this aquarium fish book and reading it front to back, studying the names of fins (adipose, dorsal, ventral, caudal), each type of fish and their differences,Cichlids, Characins, Livebearers, etc etc. I remember getting quite a clear understanding of dominant and recessive genes in the descriptions about breeding strains. Well keeping a variety of fish, living and eventually dying continued until college, and then I got so sick of moving the tank around I got rid of it at somepoint. Today I searched some images of my favorites, the first being the feeder guppy(the colorful Endler guppy type), and then the next favorites African Cichlids and White Cloud Mountain Fish. I have a 30 gallon tank in the shed out back but I'm going to wait to see if I get a job here or overseas next fall before I think about starting anything back up.