Oh man, I can only imagine the Mahi in Coast Rica. We have 2 dishes with Mahi here on our menu, but it comes in frozen...not the same thing unfortunately.
I suppose England is known for their fish and chips, curious as to which fish they primarily use. We use Cod mainly, but sometime you'll find Tilapia.
I'll let you and @dandays settle on how a fried turd would taste, haha.
The grass isn't always greener on the other side ;)
I think they predominantly use cod here too.