Apple removed the animated fish! This is a real shame, since those fish used to be my favorite wallpapers in iOS 10. If you had an iPhone 6s or later, you could press into the screen and the fish would animate back and forth based on your touch. It's a shame that Apple removed these wallpapers and didn't replace them with anything.
In general though, the wallpaper options in iOS 11 are extremely underwhelming.
Perhaps what's most frustrating is that Apple built some really amazing screensavers for the Apple TV — even showing off those same screensavers at its September 12 event — but has yet to bring any of those to the iPhone, despite the fact there are many more millions of iPhone owners compared to Apple TV owners.
Here's hoping Apple fixes this dire wallpaper situation in a future update.