..... please please PLEASE make sure you research a fish before you get it! It drives me ABSOLUTELY NUTS when people go "oh, I just picked up a few of these today and don't know anything about them."
It's important that you know what you're getting yourself into, ESPECIALLY if you're getting into some of the bigger/more expensive fish. I might be a little biased but it seems to me that it happens a lot more with cichlids than any other fish. NOT ALL CICHLIDS CAN GO IN A COMMUNITY TANK WITH YOUR GUPPIES! NOT ALL CICHLIDS WILL BE FRIENDLY WITH EACH OTHER!
Please make sure you know the appropriate tank mates, water requirements, and tank size for the fish you want. I want to strangle people who go "um...... I just bough this baby oscar and put it in my five gallon tetra tank and now all my neons are dead.... what happened?" Working at a fish store I just want to smack both the people who come in like that AND the people who were dumb enough to sell the fish without asking about the tank first.
PLEASE MAKE WISE PURCHASES, THE FISH SHOULDN'T HAVE TO SUFFER BECAUSE OF YOUR IGNORANCE!!!