HELP !

Question
hi,
    i am a new tank owner. this is the fist time in i think 5 or 6 years i have had a tank. before i had an average male beta. but now i moving to something more complex. i have had it since December 27. i think. LOL, i wanted a figure 8 puffer but hes a brackish fish, so i got 2 upside down catfish, 4 guppies and 2 tiger striped looking fish, all in a 5 gal. tank. so i got a 1 gal. and put my 4 guppies and my tiger striped fish in that. today i got a American underwater frog. and a Columbian shark. i'm psyched! but not my shark is swimming up and down and in circles, and keeps hitting the Cornor as if he will break the glass to be free. oh and i had no clue they were brackish water fish either, and hes only eating one little pellet of shrimp pellets, and my frog is not eating at all. i tried to feed the shark a guppie, but he didn't take it. i've done so much research and now i have found you. alleluia! i am almost 14 about to get started on getting a job. what do i do!

Answer
Hi Tessa,
The kindest thing you can do at the moment is bring all your fish back to the pet store.  A 5 gallon tank is much too small to house all of these fish.  Fish need room to swim, and some grow very big.  The Shark would need a 125 gallon tank, and your striped fish which I think may be botias, need at least 50 gallons of water.  There is also the fact that your water as not cycled.  Fish will die in water that is not cycled properly, and especially if they have no room to swim.  Cycled water means zero ammonia, zero nitrites, and nitrates must be low.  Overcrowded tanks stress fish, and stressed fish get very sick.  There is no chance for these fish to live, and be happy.  They will all die, so it would be better to take them back, and cycle your tank, they buy 2 -3 fish that would be happy in your 5 gallon tank.
Lynda