The yellowfin grouper (''Mycteroperca venenosa'') is a species of marine

ray-finned fish Actinopterygii (; ), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish that comprise over 50% of living vertebrate species. They are so called because of their lightly built fins made of webbings of sk ...

, a

grouper Groupers are a diverse group of marine ray-finned fish in the family Epinephelidae, in the order Perciformes. Groupers were long considered a subfamily of the seabasses in Serranidae, but are now treated as distinct. Not all members of this f ...

from the

subfamily In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end botanical subfamily names with "-oideae", and zo ...

Epinephelinae Groupers are a diverse group of marine Actinopterygii, ray-finned fish in the family Epinephelidae, in the order Perciformes. Groupers were long considered a subfamily of the seabasses in Serranidae, but are now treated as distinct. Not all m ...

which is part of the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Serranidae Serranidae is a large family (biology), family of fishes belonging to the order Perciformes. The family contains about 450 species in 65 genera, including the sea basses and the groupers (subfamily Epinephelinae). Although many species are small, ...

, which also includes the

anthias Anthias are members of the family Anthiadidae in the order Perciformes. The group has also been called Anthiidae or Anthiinae, but these names are preoccupied by a subfamily of ground beetles in the family Carabidae erected by Bonelli in 1813 ...

and sea basses. It is found in the warmer waters of the western Atlantic Ocean.

Description

The yellowfin grouper has a body which is elongate, robust and compressed, its depth being no greater at the origin of the

dorsal fin A dorsal fin is a fin on the back of most marine and freshwater vertebrates. Dorsal fins have evolved independently several times through convergent evolution adapting to marine environments, so the fins are not all homologous. They are found ...

as it is at the origin of the

anal fin Fins are moving appendages protruding from the body of fish that interact with water to generate thrust and help the fish swim. Apart from the tail or caudal fin, fish fins have no direct connection with the back bone and are supported o ...

. The

standard length Fish measurement is the measuring of individual fish and various parts of fish anatomy, their anatomies, for data used in many areas of ichthyology, including Taxonomy (biology), taxonomy and fishery biology. Overall length Standard length (SL) is ...

is 2.6 to 2.9 times the depth of the body. The preopercle is neatly rounded. sometimes having a small incision, and does not have a lobe at its angle. The dorsal fin contains 11 spines and 15–16 soft rays while the

contains 3 spines and 10–12 soft rays. The membranes between the dorsal fin spines are obviously notched. The

caudal fin Fins are moving appendages protruding from the body of fish that interact with water to generate thrust and help the fish swim. Apart from the tail or caudal fin, fish fins have no direct connection with the back bone and are supported only ...

is straight in juveniles and a little concave in adults. The head and body are marked with oval groups of dark spots and the outer third of

pectoral fin Fins are moving appendages protruding from the body of fish that interact with water to generate thrust and help the fish aquatic locomotion, swim. Apart from the tail or caudal fin, fish fins have no direct connection with the vertebral column ...

is bright yellow. There are two color morphs: a deep-water reddish morph and shallow-water greenish morph. This species attains a

total length Fish measurement is the measuring of individual fish and various parts of their anatomies, for data used in many areas of ichthyology, including taxonomy and fishery biology. Overall length Standard length (SL) is the length of a fish measured f ...

of , although they are commonly around , and a maximum published weight of .

Distribution

The yellowfin grouper is found in the western Atlantic Ocean. Its range extends along the Atlantic coasts of the United States from

North Carolina North Carolina ( ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It is bordered by Virginia to the north, the Atlantic Ocean to the east, South Carolina to the south, Georgia (U.S. stat ...

south to

Florida Florida ( ; ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders the Gulf of Mexico to the west, Alabama to the northwest, Georgia (U.S. state), Georgia to the north, the Atlantic ...

and into the

Gulf of Mexico The Gulf of Mexico () is an oceanic basin and a marginal sea of the Atlantic Ocean, mostly surrounded by the North American continent. It is bounded on the northeast, north, and northwest by the Gulf Coast of the United States; on the southw ...

where it occurs in the

Florida Keys The Florida Keys are a coral island, coral cay archipelago off the southern coast of Florida, forming the southernmost part of the continental United States. They begin at the southeastern coast of the Florida peninsula, about south of Miami a ...

and the

Flower Garden Banks National Marine Sanctuary The Flower Garden Banks National Marine Sanctuary (FGBNMS) is a United States National Marine Sanctuary located off of Galveston, Texas, in the northwestern Gulf of Mexico. It contains the northernmost coral reefs in the United States. Underly ...

Texas Texas ( , ; or ) is the most populous U.S. state, state in the South Central United States, South Central region of the United States. It borders Louisiana to the east, Arkansas to the northeast, Oklahoma to the north, New Mexico to the we ...

south through the Bahamas into the West Indies and the Yucatan Peninsula in Mexico. It is also found around

Bermuda Bermuda is a British Overseas Territories, British Overseas Territory in the Atlantic Ocean, North Atlantic Ocean. The closest land outside the territory is in the American state of North Carolina, about to the west-northwest. Bermuda is an ...

. Along the Caribbean coast of South America it occurs as far east as

French Guiana French Guiana, or Guyane in French, is an Overseas departments and regions of France, overseas department and region of France located on the northern coast of South America in the Guianas and the West Indies. Bordered by Suriname to the west ...

. It the occurs along the Brazilian coast from

Maranhão Maranhão () is a States of Brazil, state in Brazil. Located in the country's Northeast Region, Brazil, Northeast Region, it has a population of about 7 million and an area of and it is divided into 217 municipalities. Clockwise from north, it ...

São Paulo São Paulo (; ; Portuguese for 'Paul the Apostle, Saint Paul') is the capital of the São Paulo (state), state of São Paulo, as well as the List of cities in Brazil by population, most populous city in Brazil, the List of largest cities in the ...

, including the islands of Trindade and the

Fernando de Noronha Fernando de Noronha (), officially the State District of Fernando de Noronha () and formerly known as the Federal Territory of Fernando de Noronha () until 1988, is an archipelago in the Atlantic Ocean, part of the state of Pernambuco, Brazil, and ...

Habitat and biology

The yellowfin grouper is found over rocky or coral reefs as adults; juveniles are found in beds of turtle grass. This species has also been caught by trawlers over muddy bottoms in the Gulf of Mexico. Its depth range is . It is a

protogynous hermaphrodite Sequential hermaphroditism (called dichogamy in botany) is one of the two types of hermaphroditism, the other type being simultaneous hermaphroditism. It occurs when the organism's sex changes at some point in its life. A sequential hermaphrodite ...

and the females reach sexual maturity at a

fork length Fish measurement is the measuring of individual fish and various parts of their anatomies, for data used in many areas of ichthyology, including taxonomy and fishery biology. Overall length Standard length (SL) is the length of a fish measured fr ...

around and at around 4.6 years old. They will then change sex to male at a fork length of . It forms

spawning Spawn is the Egg cell, eggs and Spermatozoa, sperm released or deposited into water by aquatic animals. As a verb, ''to spawn'' refers to the process of freely releasing eggs and sperm into a body of water (fresh or marine); the physical act is ...

aggregations and these occur at different times of the year in different parts of its range. This species is mainly

piscivorous A piscivore () is a carnivorous animal that primarily eats fish. Fish were the diet of early tetrapod evolution (via water-bound amphibians during the Devonian period); insectivory came next; then in time, the more terrestrially adapted rept ...

with over 90% of stomach contents sampled consisting of reef fishes with some squid.

Taxonomy

The yellowfin grouper was first formally described by

Carolus Linnaeus Carl Linnaeus (23 May 1707 – 10 January 1778), also known after ennoblement in 1761 as Carl von Linné,#Blunt, Blunt (2004), p. 171. was a Swedish biologist and physician who formalised binomial nomenclature, the modern system of naming o ...

in the 10th edition of the ''

Systema Naturae ' (originally in Latin written ' with the Orthographic ligature, ligature æ) is one of the major works of the Sweden, Swedish botanist, zoologist and physician Carl Linnaeus (1707–1778) and introduced the Linnaean taxonomy. Although the syste ...

'' as ''Perca venenosa'' in 1758; the type locality was given as "America" but is thought to be the Bahamas.

Utilisation

The yellowfin grouper is caught by recreational and commercial fisheries; however, in some areas, this species is known to carry

ciguatoxin image:ciguatoxin.svg, 300px, class=skin-invert-image, Chemical structure of the ciguatoxin CTX1B Ciguatoxins are a class of toxic Polycyclic compound, polycyclic polyethers found in fish that cause ciguatera. There are several different chemi ...

and is not much caught for food.

References

{{Taxonbar, from=Q2725001

yellowfin grouper The yellowfin grouper (''Mycteroperca venenosa'') is a species of marine ray-finned fish, a grouper from the subfamily Epinephelinae which is part of the Family (biology), family Serranidae, which also includes the Anthiinae, anthias and sea bass ...

Fish of the Western Atlantic