The Giant Grouper (Epinephelus lanceolatus), also known as the Brindle Bass and as the Queensland Grouper in Australia, is the World's largest bony fish and the aquatic emblem of Queensland, Australia. It is found throughout the Indo-Pacific region, with the exception of the Persian Gulf. The species can grow as large as 3 m long, weighing up to 600 kg, and there have been unconfirmed reports of attacks on humans. They are fairly common in shallow waters and feed on a variety of marine life, including small sharks and juvenile sea turtles. Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Phyla Porifera (sponges) Ctenophora (comb jellies) Cnidaria Placozoa Subregnum Bilateria Acoelomorpha Orthonectida Rhombozoa Myxozoa Superphylum Deuterostomia Chordata (vertebrates, etc. ... Typical Classes Subphylum Urochordata - Tunicates Ascideiacea Thaliacea Larvacea Subphylum Cephalochordata - Lancelets Subphylum Myxini - Hagfishes Subphylum Vertebrata - Vertebrates Petromyzontida - Lampreys Placodermi (extinct) Chondrichthyes - Cartilaginous fishes Acanthodii (extinct) Actinopterygii - Ray-finned fishes Actinistia - Coelacanths Dipnoi - Lungfishes Amphibia - Amphibians Reptilia - Reptiles Aves - Birds Mammalia - Mammals Chordates (phylum Chordata) include the vertebrates, together with... Orders See text The Actinopterygii are the ray-finned fish. ... Families many, see text The Perciformes, also called the Percomorphi or Acanthopteri, include about 40% of all fish and are the largest order of vertebrates. ... Subfamilies Anthiinae Epinephelinae - Groupers Grammistinae The Serranidae or serranids are a family of fish, belonging to the order Perciformes. ... Epinephelus is a genus of grouper. ... In biology, binomial nomenclature is a standard convention used for naming species. ... Marcus Elieser Bloch (1723 - 1799) was a German medical doctor and naturalist. ... Subclasses Actinopterygii Sarcopterygii Osteichthyes are the bony fish, a group paraphyletic to the land vertebrates, which are sometimes included. ... Motto: Audax at Fidelis (Bold but Faithful) Nickname: Sunshine State/Smart State Other Australian states and territories Capital Brisbane Government Governor Premier Const. ... The Indian Ocean is the third-largest body of water in the world, covering about 20% of the Earths water surface. ... The Pacific Ocean (from the Latin name Mare Pacificum, peaceful sea, bestowed upon it by the Portuguese explorer Ferdinand Magellan) is the worlds largest body of water. ... Regional map showing the word Bahr Fars, (Persian Gulf) in Arabic, from the 9th century text Al-aqalim by the great geographer Istakhri. ... Anecdotal evidence is evidence stemming from a single, often unreliable source which is used in an argument as if it had been scientifically or statistically proven. ... Orders See Classification and Shark taxonomy Sharks are a group (superorder Selachimorpha) of fish, with a full cartilaginous skeleton, a streamlined body plan with between 5 and 7 gill slits along the sides (most often) or side of the head (the first modified slit is behind the eye and called... Genera Caretta Lepidochelys Chelonia Eretmochelys Natator Dermochelys Sea turtles are large, ocean-dwelling turtles. ...
The common name grouper is usually given to fish in one of two large genera: Epinephelus and Mycteroperca.
Interestingly, in New Zealand and Australia, the name for several species of Grouper is referred to as Groper, as in the EpinepheluslanceolatusQueensland Groper.
It could be that Epinepheluslanceolatus does not grow that big more often because it needs a big enough shelter to hide from attack by sharks or seals, and that the situation may change if the current worldwide decimation of sharks for the shark fin trade continues.
Epinephelus caeruleus can have very nice color for years, many inches in size (approaches three feet in length in the wild)...
I have a pic of a two foot plus individual taken a few years back at the Wilmelma Aquarium in Germany that is gorgeous still...
You may be able to reverse the color loss by supplementing the fish's foods with vitamin preparations (soak in Selcon, Microvit, Zoecon or such for a good fifteen minutes ahead of offering.) And of course, the usual statement here concerning keeping water quality optimized and stable...