Yup...Thats what i read also abt puffer attacking and eating those with shells........Seems this puffer is very small and my yamatos is much longer and bigger than it...hahah perhaps i have been over happy as its still too early to tell whether it will attack or not as tank now still has plenty of snails here and there esp in between the riccia and moss....haha...

But will keep a watchful eye and maybe i will feed in some snails in between just to keep the puffer with some food rather than it goes starving and attack yamatos out of no choice...haha