Cocoto fishing?
Hmm... it's... very good shovelware. LOL.
It's not so much a fishing game as it is a "fetch me this fish game." And by fetch, they mean catch. And by catch, they mean choose the corresponding bait, cast it into the water, do a simple minigame where you move the bait with the analog stick and keep it in front of the fish, jerk the wii remote at the correct time (which is somewhat tricky: each fish has different timing, and you movement has to be a concise jerk, not a long arcing crazy pull (took me about 25 minutes to figure this out)), then reel the fish in by vigorously weraring out your nunchuk arm, but giving it a rest when the fish fights back.
Rise and repeat. Buy extra fish to buy new rod. Catch uber fish boss with special bait you unlock. Go to new world with the same fish, but different models and textures and rods and skyboxes.
It's really solid at doing exactly what I told you... which isn't very deep at all, but can provide enjoyment if all you want is that simple experience. It's shovelware... and I wish all shovelware was at least this good, and cost only $8.
Hardcore gamers may turn down their nose at it though. To them, I bet Gyrostarr is a much better value. Or maybe just buckle down, and save your 700 Wii Points for something that'll truly get you excited in the future? Like... the first episode of Strongbad might be coming out this month. Hopefully.