1) Achoerodus gouldii 2) Fish 3) Giant pigfish 4) Wrasse 
• (n.) Any one of several species of salt-water grunts; -- called also hogfish. • (n.) A sculpin. The name is also applied locally to several other fishes.
(from the article `grunt`) ...(H. flavolineatum), a yellow-striped, silvery blue Atlantic species about 30 cm (12 inches) long; the margate (H. album), a usually pearl gray ...
Pig'fish` noun (Zoology) (a) Any one of several species of salt-water grunts; -- called also hogfish . (b) A sculpin. The name is also applied locally to several other fishes. 
[n] - found around the Great Barrier Reef 2. [n] - found from Long Island southward
Achoerodus gouldii noun found around the Great Barrier Reefhogfish noun found from Long Island southward