yeah my oscar is not alowed to have tank mates now she ate my favorite boy guppy i raised from birth the little booger so now my 55gl going to look boring with only one fish im sad and wish i could have tilica back he was a green leopard 6mnth old guppy who liked to suck on my fingers and dance for food and he loved playing with bigger fish including my gold fish anyways my oscar is mean and only 5 inchs so i thought she couldnt eat him yet any suggestions would be lovely

Unfortunately, you have learnt a very valuable lesson, Oscars like eating little fish and given the chance, they well. Tank mate shouldn't really be any smaller than four or 5 inches. Even a very large Oscar could probably manage to eat a 4 inch fish. If you've ever seen an extremely large Oscar, you'll know what I'm talking about, they've got huge amounts

but that means my 55gl will look so plain with one orange and white oscar

This is the one drawbacks of keeping an Oscar in the minimum size tank, you can't really have any other fish. I think you could make the tank the stunning if you really put some thought into it. A little bit of rock and some nice bog wood and it would look really good.

Agreed. Oscars make great "wet pets."

I felt pity for the guppy

anyway, just add some decors (think you're an experimenting interior designer) in the tank to make yourself busy.