I'm a bit of an angler (though mostly freshwater drifting/trolling), and they did a pretty good job showing off the hobby - i especially loved the animation on those spinning reels. The fish on the other hand, um.... they're scary. The cgi always looked unnatural next to the hand-drawn characters and the way they moved felt janky. I do not like them.
As for the story, it's fine? It seems like one of those hobby shows where someone's problems will get solved by them discovering a love for whatever thing the show is about, which always feels kind of hollow to me and just an excuse for a writer to recruit people into their hobby. This one's an anime original, so I'll give it a bit more time to prove itself, but the premiere is a 3/5 from me.