Corrected entry: When Ba'al's symbiote is removed it is shown to be a Goa'uld about 15 inches long with a fin on its back and pincers. This is a mature larva ready to take a host. A mature Goa'uld that has already taken a host is a slug-like creature approximately 6 inches long.
Grumpy Scot
29th Jun 2009
Correction: This is backwards. The larva symbiote is pinkish and quite small. The fully grown one is grey, with red eyes, pincers and fins.