Well, someone jumped the fence.
Either the fry escaped or someone jumped in the breeder net. No evidence was left.
I have floating plants in both places, just in case. Though both bettas are looking a bit plump around the middle. Someone is going to be on a fasting diet.
I'll need to fix the net before next time. Any ideas?
I believe they were guppies only because the guppy that was acting funny is now back to normal. My little one-eye momma.