hey, nice fish, but the puffer is brackish. definitely a great present for mothers day! that isnt a dwarf or a amazon puffer, so it is not freshwater. it is a common green spotted puffer, which will eventually be close to salt water as an adult, the only 2 freshwater puffers, as i mentioned, are dwarfs (AKA pea puffer) and amazon puffers, and neither of which look like this guy, amazons have stripes, and peas are a different color. and peas max out at 1". even if it is the puffer commonly mistaken for a green spotted, it is still brackish