Caught a pic of my assassin trying to drain a snail shell dry.....pics not great......but you might be able to see the narrow feeding tube down the middle of the ramshorn snails shell.
I see it.
I have a Ramshorn snail problem in two tanks, so I have some Assassins too, they are really neat.
Chris Baez, Jr.
"The problem with Christianity is not that it has been tried and found wanting, but that it has been found difficult and left untried" GK Chesterton