No, lots are, but there is also many that aren't. Some are brackish though.BryanG said:Great video!!! I loved it.
I got a question.....aren't puffers salt water? that looked like a freshwater tank (because of the plants).
I go snorkeling almost every weekend, and there are many puffers around here, in salt water. A couple weeks ago I was watching one that was almost 2' long, but never got to see one eat, that video was kewl.