Australian Taxes?

[DanJ.]

hi, i live in australia and poker is my main source of income, I am also working casually for my dad - I dont ask him for work, if someone working for him cannot do the shift, or he wants to take the day off then i will fill in...in August i worked about 40hrs max for my dad and the rest of my time was spent on poker. I got taxed on the work i did for my dad but not for poker, i was wandering if anyone knows whether i would have to pay tax or not for the money i make off poker?