Answer:
Long and slinky like a trout, never sings till it's guts come out.
You can read it both ways, I wearΝΎ One way it's a number, reversed a snare.
I am a fire's best friend. When fat, my body fills with wind. When pushed to thin, through my nose I blow. Then you can watch the embers glow.
In marble halls as white as milk, lined with a skin as soft as silk. Within a fountain crystal-clear. A golden apple doth appear. No doors there are to this stronghold, yet thieves break in and steal the gold.
Without this, eating food and Steven Spielberg's career would be very different.
Iβm grown from darkness but shine with a pale light. Very round I am and always a lady's delight.