Ok sorry that this took so long. The fish that I got is a Dwarf puffer. He is about an inch long. For some reason I thought that I wrote that in the last reply. I know I was thinking it, but I guess I forgot to type it lol. I checked in a bunch of sites on the internet and the pics were identical so I think the pet store actually did something right. Godric, I can see how you may have been confused by the molly thing, I did just mean that as a comparison, sorry about that. To stop boredom I think I am going to put in more decor. And I wont be getting him a pal because one is messy enough as he is. I know now that the rule is one puffer for every 2 -3 gallons, but I just want one. Thanks everyone and sorry about the wait and the confusion.