The Atlantic goliath grouper or itajara (Epinephelus itajara), also known as "jewfish", is a large saltwater fish of the grouper family found primarily in shallow tropical waters among coral and artificial reefs at depths from 5 to 50Â m (16 to 164Â ft). Its range includes the Florida Keys in the US, the Bahamas, most of the Caribbean and most of the Brazilian coast. On some occasions, it is caught off the coasts of the US states of New England off Maine and Massachusetts. In the eastern Atlantic Ocean, it occurs from the Congo to Senegal.
Description
Monster Goliath Groupers with NFL Linebacker Sam Barrington - 4K - In this episode of BlacktipH, Josh is joined once again by NFL star linebacker Sam Barrington from the Green Bay Packers to go fishing for monster goliath groupers off the coast of Florida....
Young Atlantic goliath grouper may live in brackish estuaries, oyster beds, canals, and mangrove swamps, which is unusual behavior among groupers.
They may reach extremely large sizes, growing to lengths up to 2.5Â m (8.2Â ft) and can weigh as much as 360Â kg (790Â lb). The world record for a hook-and-line-captured specimen is 308.44Â kg (680.0Â lb), caught off Fernandina Beach, Florida, in 1961. They are usually around 180Â kg (400Â lb) when mature. Considered of fine food quality, Atlantic goliath grouper were a highly sought-after quarry for fishermen. It is a relatively easy prey for spear fishermen because of the grouper's inquisitive and generally fearless nature. They also tend to spawn in large aggregations, returning annually to the same locations. This makes them particularly vulnerable to mass harvesting while breeding.
Until a harvest ban was placed on the species, its population was in rapid decline. The fish is entirely protected from harvest and is recognized as a critically endangered species by the IUCN. The US began protection in 1990, and the Caribbean in 1993. The species' population has been recovering since the ban; with the fish's slow growth rate, however, some time will be needed for populations to return to their previous levels.
Goliath groupers eat crustaceans, other fish, octopodes, young sea turtles, sharks, and barracudas. They are known to attack divers, and have even been seen attacking large lemon sharks.
Reproduction
Goliath groupers are believed to be protogynous hermaphrodites, which refer to organisms that are born female and at some point in their lifespans change sex to male. Most grouper follow this pattern, but this has not yet been verified for the goliath. Males can be sexually mature at about 115 centimetres (45 in), and ages 4â€"6 years. Females mature around 125 centimetres (49 in), and about 6â€"8 years.
Conservation
In May 2015, the Atlantic goliath grouper was successfully bred in captivity for the first time.
Parasites
As with other fish, the Atlantic goliath grouper is the host of several species of parasites, including the diplectanid monogenean Pseudorhabdosynochus americanus on its gills.
Etymology
The Atlantic goliath grouper has been referred to as the jewfish. The name's origin is unclear, and may have referred to the flesh having a "clean" taste comparable to kosher food, been an insulting suggestion that the fish provided low quality meat and was "only fit for Jews", or that the word was simply a corruption of jawfish. In 2001, the American Fisheries Society stopped using the term because of concerns that it was culturally insensitive.
References
External links
- Florida Museum of Natural History description including alternate names
- Atlantic goliath grouper at the Encyclopedia of Life
- Froese, Rainer and Pauly, Daniel, eds. (2004). "Epinephelus itajara" in FishBase. October 2004 version.