Planted Tank Guru
Join Date: Jul 2010
Location: Pflugerville, Tx
While your logic sounds correct, I might look further. While there are areas which the fish could definitely do the work, there are areas in the center of the leaves which would seem to be more unlikely for the fish to pluck parts.
Before convicting the angels, maybe some more looking? I suspect snails. Snails may not be seen as they often come in as eggs and only come out at night. Maybe some eggs came with the angels?
How about waiting until the lights have been out for a couple hours and then use a flashlight to carefully look for a hoard of monsters raiding your garden?
Maybe rabbits with scuba gear?
Maybe snails starting a hole which the angels then expand?