I went to my local Petsmart today to get some plants to try to finish off the look of my tank. So I figured why I was there I would see some of the fish they had, one of the salesmen I guess you would call them walked up to me and i started talking to him about a pretty Tiger Oscar they had. I was reading the tag that has all the fish info on it while talking to him, and noticed it said 40gallon for Minimum Requirements for this fish.... I asked him about it and I told him they can get 12+ he preceded to tell me if I keep the water clean and feed him the fish would be fine by himself in a 40gallon tank. Thought that was kind of funny.
I am not certain that you either caught the "minimum" qualifier or simply do not understand the word.
That means 39 gallons and your a down right irresponsible fish keeper.
Why does everyone here act like that 40 gallons is meant to be a suggestion of the tank size to home your fish by Petsmart. It is giving you the absolute minimum that is possible!
A 40 breeder is 36" long by 18" wide. If you do daily water changes a 14" adult Oscar can turn around etc.
This also means FOR THIS FISH ONLY! That means if you were to attempt it in a 40 breeder, it is a species only tank.
As in no tankmates, no decor, no substrate and no internal filters (which all would contribute a drop the water volume to below 40 gallons).
I would say that your Petsmart is being semi responsible, while you are not.
Gosh this place irks me with all of the confused idealists and elitists plopping all over.
Just out of curiosity, how much bigger than a 40 gallon breeder was the store display that was containing the Oscar(s)?
I have yet to ever see a LFS with their Oscars on display for sale in over a 40 gallon tank.
There is no law against using a tank larger than the minimum to home your Petsmart purchase.