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well i got this albino oscar that is so nice he is one of my farovite fish, but he is so aggressive and i want 2 put a common pleco in the tank and i want 1 more fish the tank is a 300 gallon! i really need help tell me any seggestions plz.

No you have a normal cichlid. Territorial. Most of them are like that. How big is he and how long has he been in the tank? Are there any decorations to break up his view of other fish?

Yup, i have the same problem with my female flowerhorn. anything i try to add becomes fish food.

best bet if you wanted another fish in the tank. i'd say put in a strong divider.

plecos, i'm thinking wont live that long. odds are they would get chased as much as the oscar is able to until it gets them and takes them out, or they are stressed to death.

Fish tanks are an expensive addiction

The oscar is 8 inches longand has been in there for 1 week and i have put 1 pleco and it is 14 inches long and hesdoin fine put i also put a 14 inch orange pike cichlid and hes pretty beat up and hes in a 125 gallon tank recovoring from the attack. i want 2 put one of the coolest fish i have found and it is a 2 foot long nose gar they are so cool! i have a lot of decorations and i have a lot of live plants that havent been up rooted yet! i have a lot of cavesand rock formations in my tank and i set up the back of the tank 2 have plactic holes like wholes in a river bed and i have a male pleco and the store has a female one cuz the guy told me that they where maele and female and hes one of my best friends so i get a 50% discount on all my fish and tanks and supplies! so plz help me!

thanks for the replies!

I think your asking for solutions that dont exist. Cant put large territorial predatory cichlids together without them fighting. Oscars are notorious for not accepting cagemates of any kind. Theres no other advice to give except stop.If you want a community tank, you dont base them around fish like oscars. Just leads to savaged and killed cagemates. If you want fish like plecs and nocturnal catfish in with them its sometimes do-able, but there must be a huge amount of bogwood and caves that only they can squeeze into and the oscars cant, you could take up half the interior space of a 300 gal doing that successfully, and there are still risks. In nature an oscars territory is about 8 cubic feet, and other fish are chased off. Suddenly makes a 300 gallon seem not so big.

ok well thanks for the help i got my oscar a mate and they are already getting 2 like eachother and i think they might breed and that would be cool cuz i love oscars. i dont know wat 2 do with the babies! lol so ill figure it out i might use a feeders but i dont know and ill sell some.
thatnks for all the repiles!

Agreed on the community tank. It's just not gonna happen with big aggressive fish.

I've just added a small African with my Red Devil and while there's been some action, there's no damage done yet.

If you do decide to keep the Oscar then I recommend your tankmates are 1) small 2) fast 3) few in number. A large cave system with multiple levels and entrances will give the other fish some timeout space.

But as always, big aggressive fish will be big aggressive fish. Nothing you do will be foolproof.