difference between super tongan nassarius and nassrius snail

what is the main difference between super tongan nassarius and regular nassarius snail if they are same size? How might I tell the two apart?

Thanks.
 
The 'super tongan' ones have a more rugged, wavy shell, and they have a very thick lip around the opening, whereas the rim around the regular nasarrius look just like the rest of the shell.
 
I have kept both... regular nassarius are smaller and grey shells. Do a bang up job on keeping anything that hits the sand clean. Biggest I have seen is about 1/4". Tongans that I have also kept are white and about 1/2 or so large, also do a good job. As far as which is more effective or $ efficient, I think you get more bang for your buck with the tonga variety as they are larger and will eat more so you can keep fewer. Still in a DSB I think the smaller and more numerous would be better.
 
Top