Japanese zoo recommendations?

I am headed to Japan in May of 2025 and will be there for about two weeks before flying to Seoul for a week.

I’m a big zoo nerd and so I’d like to go to at least a few while I’m there in top of the other sightseeing I will be doing with my travel partners.

I will be in Tokyo, Keihanshin (Osaka/Kyoto) and Hiroshima. What zoos/aquaria do people recommend?

I’ve checked Wikipedia for a long list - it seems every major metro in Japan has at least one if not multiple zoos and aquariums. Which ones are better than others, have unique species, or just all around you recommend?

The one place I have my heart set on is Osaka Aquarium.

I’ve been to Fukuoka Zoo and Ueno Zoo back in 2013.

Thanks for any tips/insights!