thanks for the link. I think i might have an aligator. I have heard that wich either type, the shell is roughly textured when they are young. Are the commons still like this when they are palm sized like mine. The common snapper's sides seem to be well rounded. mine's shell has the spikes at the rear. I am still not an expert, so there will be pics. u guys tell me if it is an alligator. If it is, what do i need to do differently.