I wish my Poly's would eat snails. I have probably 150 red ramshorn snails in my 180 that they don't even notice. Luckily my clown loaches keep their numbers down. The juvenile grow out tank is full of them too. Sometimes my 5.5" endli will approach one and smell it, but he never bites or attacks. The delhezi seem oblivious to their presence. Its that or they just don't care.