Wow, thats great growth rate for a blue dolphin. I wish mine would grow that fast. I noticed it does not grow at all then all of a sudden it has a small growth spurt, about a quarter inch or so , then months at that size , then another spurt...
I like the colors too, i hope it does not fade too much, i have seen many that lighten up alot . I have also seen some very blue adult fish. I will keep my fingers crossed that mine will stay dark blue LOL.