Oscars in a 170 gallon tank

Hey all,
I currently have two adult male Oscar’s in separate tanks. I’m planning on buying a 170-180 gallon. I got them both as babies and they were in the same tank for about a year until the larger one started being too aggressive, so I moved one.

Would getting this 180g tank as well as a couple of other types of cichlids, would this work? Would they get along or have sufficient enough space to get along if there were other species as well???

Do Oscars fish prefer more water volume or length more? I want nothing more than to have my two boys together in the same tank with a couple of other fish as well. It’s too hard to upkeep two tanks at the moment with only one fish in each and I feel bad that they’re alone.

Please help with some advice?

 

I am not sure if this will work, even in the bigger tank the more dominant Oscar might still be aggressive to the other.

 

Oscar’s are solitary fish. If aggressive before it be aggressive again. Adding over cichlids cab also bring on aggression.

 

I tried this with an aggressive cichlid once, bringing him back into the display tank after some other changes. I can’t really think of anything I have regretted so immediately. After living alone he became even more of an assassin, like an old hermit sensei practicing on a remote mountain top.

 

I would not put the two oscars together if they already have a bad history together but what type of new cichlids are you getting? MBUNAs? Peacocks?Haps?

 

I would not put the two oscars together if they already have a bad history together but what type of new cichlids are you getting? MBUNAs? Peacocks?Haps?

Hopefully not those!

 

A good tank mate for oscars could be bichirs since they are bottom dwelling fish.

 

I don’t think so. I’d say easy prey for an Oscar.

 

Really? I know ornate bichirs get massive and way too big for a oscar but the younger ones could be a snack

 

Really? I know ornate bichirs get massive and way too big for a oscar but the younger ones could be a snack

Probably to do with the shape of them, they are kind of thin...

 

There not that thin and the oscar occupies the top to middle and the bichir occupies the bottom.

 

There not that thin and the oscar occupies the top to middle and the bichir occupies the bottom.

Oscars will go everywhere in the tank.

 

I am not a oscar expert and I get all my info from other people about them but I have seen many people keep bichers and oscars together I think its like keeping a betta with neon tetras, it depends on the betta or in this case the oscar.

 

I am not a oscar expert and I get all my info from other people about them but I have seen many people keep bichers and oscars together I think its like keeping a betta with neon tetras, it depends on the betta or in this case the oscar.

That could be true and a full grown bichir would probably be OK.

 

I heard ornate bichirs are around 2 ft

 

When selecting tankmstes for an aggressive big Cichlid, one either needs to pick a large non threatening fish like Silver Dollars or a formidable even more aggressive Cichlid.
In a big tank, Cichlids such as Festae, Rivulatus, Midas or even a Texas Cichlid would be more than a enough to change up the hierarchy between the two Oscars and might result in relative stability.