Nikon has done it!!! We now have fish AF as a selectable subject in the new Z 5II C. See this informative vid: https://www.youtube.com/watch?v=8pIkIlUEnrM

Wow, that's exciting! About time!

@Brett Lobwein @Simon Pierce - you guys will have to get Sony to lift their game and get Fish Focus included in a Sony firmware update!

I assume that will eventually be added to firmware update on other models. I have no interest in the Z5IIC.

I wonder how well it actually works. I could see it easily being confused, especially with tropical species that have intricate patterns and often false eyes. Hopefully they offer firmware updates on their other cameras so I could try it, as I also have no interest in the Z5IIC.

They should create a website or app where you can submit your own photos (of anything) and select the primary target in each photo and then it builds a custom model for the camera to use based on the type of images you take and what you want it to focus on. People could then sell their models just as they do with presets.

Or the ability for a camera to "learn" subjects