I was missold a Ceylon puffer (tetraodon fluviatilis) online when it was clearly stated to be a "tetraodon biocellatus" (figure eight puffer). I have neither the space nor money for a 55 gallon tank for him, and I don't think he will thrive in my 30 gallon setup as he matures to be an 8 inch fish (5 inches bigger than expected!). The problem is that I live in very rural England, and none of my Lfs will consider trying to take a brackish fish. It's really sad because I have grown very attached to him and I have no idea how to rehome him. He's only 2" big at the moment, but I'm sure that will soon change. Any advice on how to rehome him? How long will it be until the 30 gallon stunts his growth/affects him physically?