If you're wondering if there are freshwater puffers, then your confusion is justified! Many pet stores are completely unaware of the true freshwater puffers, which in turn leads them to tell their customers that all puffers need salt in their water. This is completely false. However, many of the puffers that are commonly sold as freshwater aren't really freshwater fish at all. One of the best examples of this is the green spotted puffer (Tetraodon nigroviridis); they are high-end brackish water fish. I can't count how many pet stores I've been in that looked at me like I was crazy when I asked about freshwater puffers, or pointed out to me that I was keeping mine wrong and that they would all die if I didn't add salt to their water. Anyway, I just wanted to take the time to clear that little myth up. :)
Do you have any questions regarding their care? Or perhaps you're wondering about a specific species of freshwater puffer? Let me know with a comment!
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