I've read that as well, I'll see what the markets here in Montreal have to offer.what does the discription say? whats added? oil, salt, e-numbers?
If its just water it might be fine to be honest. Would be smart. But you can also just buy a box of crabs or crayfish in a chinese supermarket for real cheap.
As for the baby clams:
Ingredients:
BABY CLAMS, WATER, SALT, DISODIUM PYROPHOSPHATE, CITRIC ACID, CALCIUM DISODIUM EDTA.
The nutrition facts show 300mg per 56g. So in the entire can there's about 900mg, or 0.9g of salt. I'd assume once you drain the water it's even less. Would this be a safe option? I'd like it as well just to include as some variety for my puffer (and for the teeth). Although would crab shells be enough for teeth grinding on fahakas?