I love that picture! They may have better sense of smell than other snails I've had, because they do that a lot and then head for the food. They seem to be able to smell even sunflower seeds from across the tank (half a meter at least).
I would be interested in trying to house some of these so if you have problems finding homes let me know! I'm always interested in unusual species and though I love my GALS I am happy to consider smaller species for one of my vivariums.
OMG! My babies are laying eggs! Guess they're not my babies any more The biggest are now 4-5cm. I don't know exactly how many I have, all dark striped variety. Please let me know if you want some. (Adults 10€/each + 10€ p&p from Norway).