Ok, so about a week ago i bought another green spotted pufferfish. I kept him in the same tank as my old one and today i find him dead? Why? His sg was 1.004 and there was no nitrite or ammonia in his tank. He also ate earlier in the day. Then later on i noticed him staying near the bottom of the tank. Does anyone know what happend? I'd really like to keep one of these till they reach adult hood. Oh by the way he was in a 10 gallon and he was a little bit under an inch long.