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Black Grouper Juvenile

author
Maria Johnson
• Sunday, 25 October, 2020
• 8 min read

Spotted black groupers are large, territorial reef fishes that can reach 2 m in length and at least 80 kg, although most seen in New Zealand are considerably smaller than this. Spotted black grouper (Epimetheus Amelia) are known as black cod, saddled rock cod and saddle tail grouper in Australia.

grouper juvenile bonaci mycteroperca flickr
(Source: www.flickr.com)

Contents

Spotted black grouper are true groupers belonging to the family Serranidae, subfamily Epinephrine. Although commonly called ‘groper’ in New Zealand, the haiku (Poly prion oxygenate) and bass (P. Americans) are actually ‘wreck fishes’ belonging to the family Polyprionidae.

Spotted black grouper are only found in southeast Australia (Spencer Gulf to southern Queensland, excluding Tasmania), Elizabeth and Middleton Reefs, Lord Howe and Norfolk Islands, and northern New Zealand. In New Zealand the largest and possibly only breeding population is found in the Germanic Islands Marine Reserve.

Around mainland New Zealand spotted black grouper are relatively common on shallow reefs at Three Kings Islands and along Northland’s rocky east coast. Small juveniles have been recorded as far south as Dominika on the west coast, and Palmier Bay in the east.

Spotted black grouper inhabit rocky reefs in estuaries and on the open coast to at least 50 m depth. At the Germanic Islands small juvenile spotted black grouper are found in large intertidal rock pools as well as amongst boulders at 20 to 30 m depth.

Spotted black grouper appear to have had very little fishing pressure anywhere in New Zealand, however those in eastern Australia are considered to be heavily depleted by line, set net and spear fishers. Spotted black grouper are opportunistic predators of smaller reef fishes and crustaceans (shrimps, crabs and rock lobster).

grouper juvenile bonaci mycteroperca
(Source: flickr.com)

Spotted black grouper are vulnerable to a variety of fishing methods due to their large size, territorial behavior and natural curiosity. Populations in eastern Australia are considered to be overfished and their estuaries nursery habitats are threatened by coastal development and pollution.

Spotted black groupers may suffer internal damage from hooks and over-expansion of their swim bladder if caught by accident. Like whales, large filter-feeding sharks and rays can accidentally ingest these, and all species suffer from entanglement in marine debris.

Description: Photo take at -40 ft on an old metal buoy that is a wreck at the bottom this two juvenile groupers hide inside to protect them self's from predators these ones are about 25 cm brown color whit white stripes and dots. Habitat: Found under pears, on coral reef, ship wrecks and coast caves.

Notes: The black grouper is an IUCN Red List Near threatened species, vulnerable to increases in exploitation because it is a relatively slow breeder. Catch, photograph and identification courtesy of Ryan Crutch field, Tampa, Florida.

Fish caught from coastal waters off Islamabad, Florida, January 2016. Fish caught from coastal waters off southwest Florida, December 2014.

grouper juvenile
(Source: flickr.com)

Catch, photograph and identification courtesy of Ben Cantrell, San Diego, California. The Backgrounder, Mycteroperca Monaco, is a member of the Grouper or Epinephelidae Family, and is known in Mexico as China grille.

Globally, there are fifteen species in the genus Mycteroperca, of which eleven are found in Mexican waters, seven in the Atlantic and four in the Pacific Ocean. The Backgrounder has an elongated, robust, and compressed body with a depth that is 27% to 31% of standard length.

Their head has a long snout, a projecting lower jaw and the properly is evenly rounded (a key to identification). Juveniles are found in estuaries seagrass, mangroves, and oyster rubble.

The transition normally occurs in fish that are 1.0 m (3 feet 3 inches) in length and about fifteen years in age. Reproduction is oviparous and occurs with seasonal spawning aggregations with large numbers of individuals.

The Backgrounder is poorly studied with very limited information available about their lifestyle and behavioral patterns including specific details on age, growth, longevity, movement patterns, diet, habitat use, and reproduction. The Backgrounder is a resident of all Mexican waters of the Atlantic Ocean including the Gulf of Mexico and the east coast of the Yucatán Peninsula in the Caribbean.

grouper juvenile
(Source: flickr.com)

From a conservation perspective the Backgrounder is currently considered to be NEAR THREATENED with a 30% decline in populations over the last ten years. Historically they have been heavily targeted by both commercial and recreational fishermen, especially when they aggregate for spawning.

The Mexican Government has imposed regulations on commercial fishing that include annual quota limits, commercial minimum size limits, seasonal closures and the ban of sales during spawning season. Wood plaque with personalized engraved plate available. Available as 360° view ceiling mount.

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We are able to transform raw materials into the ultimate representation of an angler's most notable achievement. Great attention to detail and true craftsmanship is our motto while we continue to serve customers around the world.

Gray Taxidermy goes to great lengths to ensure the precise color and characteristics are resembled in your custom Backgrounder fish mount. Details: Fired-Enamel Glass Eye Product Options: Wood Plaque, Custom Base, 360° We also offer elegant solid wood plaques to accompany for trophy mount.

grouper editorial juvenile
(Source: www.gettyimages.com)

Includes traditional wood plaque with sublimated personalized information. Description: The Black grouper (Mycteroperca Monaco) is one of the best known of the large group of perform fish called groupers.

The northern boundary of its range is off Massachusetts and extends east to Bermuda. It is also present in the Gulf of Mexico and the Caribbean Sea, including the Florida Keys and Cuba.

Black groupers are found mainly on rocky bottoms and in coral reef environments. The black grouper is a fairly large marine fish, growing up to 150 cm in length and 100 kg in weight.

Scientific classification Kingdom: Animalia Phylum: Chordata Class: Actinopterygii Order: Performed Family: Serranidae Subfamily: Epinephrine Tribe: Epinephrine Genus: Epimetheus Species: Binomial name Epimetheus fascists Synonyms Percy fascia ta Formal, 1775 Serra nus fascists (Formal, 1775) Epimetheus marginalia Bloch, 1793 Serra nus marginalia (Bloch, 1793) Holocentrus erythraeus Bloch & Schneider, 1801 Holocentrus forsake Labeled, 1802 Holocentrus marginates Labeled, 1802 Holocentrus Rosmarie Labeled, 1802 Holocentrus oceanic us Labeled, 1802 Serra nus oceanic us (Labeled, 1802) Serra nus Alexandria Valentines, 1828 CERN Alexandria (Valentines, 1828) Epimetheus Alexandria (Valentines, 1828) Serra nus various Valentines, 1828 Epimetheus various (Valentines, 1828) Serra nus tsirimenara Terminal & Schlemiel, 1842 Epimetheus tsirimenara (Terminal & Schlemiel, 1842) Percy maculate Forster, 1844 Serra nus cruets DE Vi's, 1884 Serra nus geometric us DE Vi's, 1884 Serra nus subfasciatus DE Vi's, 1884 Epimetheus papyrus Scale, 1906 Epimetheus Emory Schultz, 1953 The blacktop grouper (Epimetheus fascists), also known as the red banded grouper, blacktopped cod, black -tipped rock cod, footballer cod, red-barred cod, red-barred rock cod, scarlet rock-cod or weathered rock-cod, is a species of marine ray-finned fish, a grouper from the subfamilyEpinephelinae which is part of the familySerranidae, which also includes the antics and sea basses.

It is the type species of the genus Epimetheus. The blacktop grouper has a body which has a standard length which is around 2.8 to 3.3 times its depth.

grouper juvenile
(Source: www.flickr.com)

The area between the yes is flat but the dorsal profile of the head is convex. The rounded properly has a finely serrated rear margin with he the lowest serrations slightly enlarged.

The upper edge of the gill cover is straight. The dorsal fin contains 11 spines and 15-17 soft rays while the anal fin has 3 spines and 8 soft rays.

The color is variable and ranges from pale greenish gray to pale reddish yellow to scarlet. They frequently have 5 or 6 faint dark bars, the final one being on the caudal peduncle.

The scales on the upper body have a pale center and dark rear margin, which creates am indistinct checked pattern. The outer membrane of the spiny part of the dorsal fin is black, or dark red in specimens from Western Australia and some from deep water.

There is a pale yellow or white spot to the rear of the tip of each of the dorsal fin spines. This species attains a maximum total length of 40 centimeters (16 in), although a more common length is around 22 centimeters (8.7 in), and a weight of 2.0 kilograms (4.4 lb).

grouper juvenile equator east
(Source: svreach.com)

This species may present simultaneous Hermaphroditus in smaller individuals, while the large individuals usually lose female function. Blacktop groupers are host of several parasites, including Pseudorhabdosynochus SPP.

The filmstrip nematode Philomath fascia ti is parasitic in the ovary of female fish; the adult female parasite is a red worm which can reach up to 40 centimeters in length, for a diameter of only 1.6 millimeter; the males are tiny. Raphidascaris (Ichthyascaris) fascia ti is a nematode parasitic in the intestine, 20 mm in length, described in 2020 and named after the fish.

An annotated and illustrated catalog of the grouper, rock cod, hind, coral grouper and lyre tail species known to date (PDF). Coral reef guide; Red Sea.

“Species of Pseudorhabdosynochus Yamagata, 1958 (Monotone: Diplectanidae) from Epimetheus fascists and E. Terra (Performed: Serranidae) off New Caledonia and other parts of the Indo-Pacific Ocean, with a comparison of measurements of specimens prepared using different methods, and a description of P. Caledonia n. SP”. “Photometries (Nematode: Philometridae) in paranoid and serrated fishes off New Caledonia, including three new species”.

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