snail id

[bewaretheblond]

can anyone tell me if these snails are good or bad, they came in some chaeto. the big one is a little bigger than a quarter, and the smaller ones are like about the size of a nickel and they always stay at the top, half out of the water. thanks.

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[dogstar]

Not the best photo but IMO, the two smaller ones are Cerithiums and the larger one is a Nassarius. Both are OK.

 

[renogaw]

they could be the fake nassarius snails that people are trying to pawn off as them (the ones from north carolina). they also look like periwinkles...

 

[renogaw]

or whelks

 

[renogaw]

actually, from the behavior, i'm going to say most likely periwinkles...
if they go above the water, do they lock up tight against the glass?

 

[bewaretheblond]

i'm not sure what you mean by that, the little ones are easy to pick off but the big one is so strong i had to pry her out of the styrofoam box with a plastic fork after she was done acclimating.
no they are the fake nassarius obsoleta or whatever, i got some of those one time and these are much bigger than that.
are periwinkles bad?

 

[dogstar]

I played with the photo to show more detail so others hopefully will chine in....