The Green Spotted Puffer fish (Tetraodon Nigroviridis)

Well recently I bought a puffer fish named Buttercup, after the green and black powerpuff girl. Turned out she had fungus but she's all better now. With green spotted puffers I would only house one by itself as they are very aggressive and will tear other fish in two with it's sharp 'beak', even if you kept another gsp with it they would still nip and fight with each other, and puffers are poisonous to eat so you don't want to get a huge fish that will eat it. They need to be fed something hard e.g. a snail regularly to keep their teeth trimmed if not you will need to do that for them which is a very tricky business, they can live up to 10 years old so a lot of tricky trimming. They prefer a temp of 24-28^oC... 7.5 to 8.5 for ph.These fish are more like dogs than fish, they are very smart and curious, they will also soon recognize their owner. They NEED brackish water.. Most pet shops that aren't worth their salt will keep them in freshwater (pardon my pun) but the gsp will slowly die (over months) in freshwater, they need brackish water, which is in between freshwater and saltwater. As the puffer gets older you will want to increase the salinity until you have your puffer in marine water (when your puffer is a few years old). These little guys are worth their weight in salt and I would advise them to anyone!