guys Im just asking, spotted gar & longnose gar are compatible?

One of our most active members has got a Gar and I don't think he has any problems keeping it with his Oscars, although I believe it will munch on any small fish that gets the chance to eat so you have got to be very sensible keeping these fish. I'm sure that you will hear from him shortly.

Yes, if your tank has a big enough footprint.
I've seen the combo in many other tanks.
At least 6'x2'x2'(2,5 wide is even better)

The longnoses spook easier than the Floridas, though.
I say Florida's for 99% of all Gars sold as spotted are actually Florida.
Longnose feeding can be more of a pain for their longnose makes it harder to fit preyfish into their mouth.

edit: i don't know if you plan on keeping the longnoses with the oscars, if you do their skittyness may have them run into the walls of your tank and do damage to their beaks and spines.Feeding will be an even bigger problem, with hungry o's.
Florida are a better option, for they're more tough and spook less easily,imo.

tnx for the info noddy!!! I have 2 florida & 2 longnose... but I have 4 oscars left.. I have a indoor pond.! coz Im selling some of my O's.. ehehehe

Yeah , i remember the pond.
that will make a big difference, for the fish will less likely bump into the walls!

by the way noddy have u heard about goliath tiger fish?

for sure, i just missed that one in the Guess the fish game, but yeah, that's one teethy guy!
To much teeth for in my tank!

in your opinion, are they compatible with gars?

I'd say if they're small it could work, although a timid Gar may have a hard time competing for food.
Here's the combo in a vid:

SO, goliath tiger fish can be stunted? their size?

that vid was 10/10!