Research a fish before you purchase it
+2
Really not trying to be rude, but those aren't just toys or amusements. They are living creatures, just like you. Its not fair to the fish to keep them in unsuitable spaces.
There are lots of fish I would love to own, but I can't. Half this forum would cut off a finger for an arapaima, but the truth is that most of us can't own one because we can't finance it. I waited for years just to pick up a few pieces of my dream stock.
Its a great hobby, but it takes patience and a near inhuman level of respect to rear the true monsters. Don't give up, but know that you have approached from the wrong angle. No one here wants to flame you. This community has taught me so much. We'll help teach you too.
First things first-- get on craigslist and find a grow out tank. 180 gallons will serve for a year or so. Make plans immediately for a bigger tank. Otherwise, sell the stock, and get a setup together.
Then find stock. Always spend 10+ hours researching a fish before purchasing. Thsts half the fun! When in doubt--ask questions. Lots of questions. People here are more than happy to impart knowledge.
"With every mistake we must surely be learning."
Godspeed, friend.