Its either a Colomesus asellus "Amazon Puffer" FW fish or "Figure Eight" Brackish fish... Brackish fish do require salt in their tank... Most likely what you have, but thats a hard pic to see.
Its either a Colomesus asellus "Amazon Puffer" FW fish or "Figure Eight" Brackish fish... Brackish fish do require salt in their tank... Most likely what you have, but thats a hard pic to see.
When I kept amazons, they never had black circles on their back, always black stripes... If the guy said it needs salt, maybe its some brackish puffer...