Is it just my eye, or was that oscar in pretty poor condition even before he got beaten up? Belly looks pretty hollow 
Anyway.. like the guys say, your fish just aren't compatible so decide what sort of tank you want to have and just keep those.
The Africans are cool, but they are pretty mean. Really limits you to other Africans and some big armour plated plecos.
If you want a wider range of fish then you can go for the South Americans, the oscar, plecos are fine with most other sane fish. Bala sharks aren't from SA, but will live happily with those species.
Pufferfish are pretty much in a class of their own.. They will eat anything then can. Only reason yours hasn't is cos it's still small.
Cant comment on the prices except they seem pretty steep, but anybody that told you those fish could live together doesn't deserve your business.
Cheers
Ian
Anyway.. like the guys say, your fish just aren't compatible so decide what sort of tank you want to have and just keep those.
The Africans are cool, but they are pretty mean. Really limits you to other Africans and some big armour plated plecos.
If you want a wider range of fish then you can go for the South Americans, the oscar, plecos are fine with most other sane fish. Bala sharks aren't from SA, but will live happily with those species.
Pufferfish are pretty much in a class of their own.. They will eat anything then can. Only reason yours hasn't is cos it's still small.
Cant comment on the prices except they seem pretty steep, but anybody that told you those fish could live together doesn't deserve your business.
Cheers
Ian