Hi, wanted to bump this topic...
I had 2 assasin snails till a month ago when my flatmate looked after my tank-1 got trapped in the filter (very sad).
They were laying eggs before this.
I recently thought I had seen more eggs but dismissed it knowing I now only had 1.
However... This evening I came home to find an egg on my vallis plant. I only bought the vallis 2 weeks ago.... From a snail free tank and I am sure there was no egg on it yesterday.
30 l juwel vio, fluval 206 external filter, DIY co2, 50w heater.
Black sand, moomin and bog wood, granite rocks
Fauna: 14 cardinal tetras, 5 boesemani corydoras, 3 otocinculus, bee shrimp, 2 assassin snails (some pond snails for the assassins)
Flora: vallisinaria, have moss, flame moss, mini pellia, fissidens fontanus, Pygmy chain sword, dwarf hair grass, golden anubia, bonsai Anubias and some algae (!)