I haven't seen this posted yet, so here we goo. It's a relatively recent on-going manga called Shibuya Kingyo (Shibuya Goldfish) that is highly centered on large goldfish that can swim through the air eating people. There's plenty of both male and females getting eaten, mostly in hard vore fashion, but with the occasional swallowing as well. If you're into fishies eating humans like me then this is something you might want to check out. Especially considering how rare fish eating humans is these days. The art and storytelling are also quite a bit better than expected! It's really suspenseful and kept me reading not just for the vore, but also to see what happens next!
Link to where the manga can be read:
https://mangadex.org/manga/23991TLDR: Goldfish eating male and female humans, lots. Almost an entire city full. Mostly hard vore. Manga with thrilling story with good art.
Also, there's another manga called Eater's Fang where a bunch of ravenous animals get released into the city. It was released back in 2017 and was completed already with 2 Volumes of 17 Chapters total. I haven't been able to find it, but I thought I'd mention it since we're on the subject.
More info on Eater's Fang:
https://myanimelist.net/manga/104112/Eaters_Fang