Need Advise On Oscars

I need some advise on Oscars. Just asking to see how it would be but I own 2 Oscars at the moment. My first Oscar is about 5-6 inches and lives in a 55 gal tank. My second Oscar is about 11-12 inches and lives in a 75 gal tank. I was on Facebook today and came across an add that someone is getting rid of all of their fish equipment and they have a beautiful Oscar in a 29 gal tank about half the size of the tank (id say full grown 14+ inches). Would it be a bad move to tank both of my Oscars in the 75 gal tank and the Oscar that needs help in the 55 gal? My 75 gal has enough filtration and both of my Oscars are good around other fish? I would appreciate any advise. Another tank is not an option I need to work with what I got

 

This is the Oscar I’m referring to.

 

I hope someone who knows says yes so you can help that poor guy.

 

I hope someone who knows says yes so you can help that poor guy.

The only problem is Oscars are meant to be kept in a 75 minimum when there full grown. I know the chances of me being able to give him a good home are slI'm being I’m not sure I have the room for him, but I want to see if it’s possible for me to make room so I can help this guy.

 

For two Oscars 125 gallons is what you want to aI'm for. If eventually you would want to house all three together, try and get 150 gallon or more. These fish get huge and multiples in tanks under 100 gallon is just not a good idea.

 

I had 2 in a 75 for awhile till he decided he wanted the whole tank and killed the other. Even having only one in the 75 I will never do it again. If I was to get another it would be in a 90 simply for the added width.

 

I had 2 in a 75 for awhile till he decided he wanted the whole tank and killed the other. Even having only one in the 75 I will never do it again. If I was to get another it would be in a 90 simply for the added width.

75g and 90g width are the same. Depth is different...1/2 inch. Height is taller on a 90.