I`m in Edinburgh m8, picked it up from a guy in Mayfield.£130 is cheap, where in the UK are you, I'm way down in Kent!-)
I think he said a 180g for an Oscar and I agree that that's a suitable size, for it to comfortable with a few tank mates.
If you want to cram 16" heavy tall bodied fish into 4' tanks then you need to expect to get flamed on here, we arnt in the 1990's anymore, things have moved on and 180g are cheap.
It`s cl, i don`t think there`s many question`s that are`t going to throw up a difference of opinion. Yeah i`ll check it out.BTW, @OP truly sorry for derailing your thread. Your fish is beautiful, going to be uploading a video of my 240 gallon tank I have a 12 inch Quetzal hope you check it out and once again my apologies.
This will be short term also. I`m looking out for a tank of the same size or bigger and going to move the central`s into it and keep that one as a southy.