Thanks Guys.
The golden colour is typical of river caught Mulloway, when they come out of the ocean they are very silver in colour.
Scientific name is "Argyrosomus Hololepidotus". We also have Northern Mulloway, which are very similar except for a narrower back. Both have a large "paddle" shaped tail, and grow up to 30+kg. Western Australian record for a Mulloway is over 40kg.
