I gave this a go and it's surprisingly addictive, so I thought others might like to give it a try...
It's called Fishing Planet and it's a FREE to play game (Has in-game purchases etc.) You can get it on STEAM (If you don't know what STEAM is ask a young 'un) check it out here: http://store.steampowered.com/app/380600/ Also there's loads of videos of gameplay on YouTube so you can see what it's about.
Sadly, there's no Sea Fishing in it and it doesn't really start to get good until after Level3 where you unlock spinners/spoons but once you unlock those it's pretty much non-stop action all the way! Getting to Level3 is a bit of a grind though so be warned!
I'm up to Level9 now so it's got me well and truly hooked!
Well worth a look for FREE!
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There's a fine line between Fishing and just standing by the shore looking like an idiot.