The amount of hair is not a great determination of sex. Mine is quite hairy and is female. I know for sure because she has dropped eggs before.
This is a really pleasant surprise
When i clicked on the thread and saw the first post was back in 2014, i thought, someone just revived an old thread, but after reading this last post i am very happy i went through the thread and the puffer still being there with you.
I have been keeping one for almost an year now, and i want to ask a few questions as you have good experience with this one.
Mine when new was a very very active specimen constantly running around the front pane the moment i was in the fish room, now just hides under a piece of driftwood, eats once or twice in a week, although would eat crabs eveytime if I put.