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Serranidae is a large
In recent times, this family has been proposed to be split. The two hypothetical families emerging from the remains of the possibly-obsolete taxon are the families Epinephilidae and Anthiadidae. This taxonomic separation is recognized by some authorities, including the IUCN.
Recent molecular classifications challenge the validity of the genera ''
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 ...
of fish
A fish (: fish or fishes) is an aquatic animal, aquatic, Anamniotes, anamniotic, gill-bearing vertebrate animal with swimming fish fin, fins and craniate, a hard skull, but lacking limb (anatomy), limbs with digit (anatomy), digits. Fish can ...
es belonging to the order Perciformes
Perciformes (), also called the Acanthopteri, is an order or superorder of ray-finned fish in the clade Percomorpha. ''Perciformes'' means " perch-like". Among the well-known members of this group are perches and darters ( Percidae), and als ...
. The family contains about 450 species in 65 genera, including the sea bass
Sea bass is a common name for a variety of species of marine fish. Many fish species of various families have been called sea bass.
In Ireland and the United Kingdom, the fish sold and consumed as sea bass is exclusively the European bass, ''Dic ...
es and the 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 ...
s (subfamily Epinephelinae). Although many species are small, in some cases less than , the giant grouper
The giant grouper (''Epinephelus lanceolatus''), also known as the Queensland groper (grouper), brindle grouper or mottled-brown sea bass, is a species of marine ray-finned fish, a grouper from the subfamily Epinephelinae which is part of the fa ...
(''Epinephelus lanceolatus'') is one of the largest bony fish
Osteichthyes ( ; ), also known as osteichthyans or commonly referred to as the bony fish, is a Biodiversity, diverse clade of vertebrate animals that have endoskeletons primarily composed of bone tissue. They can be contrasted with the Chondricht ...
es in the world, growing to in length and in weight. Representatives of this group live in tropical and subtropical seas worldwide.
Characteristics
Many serranid species are brightly colored, and many of the larger species are caught commercially for food. They are usually found overreef
A reef is a ridge or shoal of rock, coral, or similar relatively stable material lying beneath the surface of a natural body of water. Many reefs result from natural, abiotic component, abiotic (non-living) processes such as deposition (geol ...
s, in tropical
The tropics are the regions of Earth surrounding the equator, where the sun may shine directly overhead. This contrasts with the temperate or polar regions of Earth, where the Sun can never be directly overhead. This is because of Earth's ax ...
to subtropical waters along the coasts. Serranids are generally robust in form, with large mouths and small spines on the gill coverings. They typically have several rows of sharp teeth, usually with a pair of particularly large, canine
Canine may refer to:
Zoology and anatomy
* Animals of the family Canidae, more specifically the subfamily Caninae, which includes dogs, wolves, foxes, jackals and coyotes
** ''Canis'', a genus that includes dogs, wolves, coyotes, and jackals
** Do ...
-like teeth projecting from the lower jaw.
All serranids are carnivorous. Although some species, especially in the Anthiadinae subfamily, only feed on zooplankton
Zooplankton are the heterotrophic component of the planktonic community (the " zoo-" prefix comes from ), having to consume other organisms to thrive. Plankton are aquatic organisms that are unable to swim effectively against currents. Consequent ...
, the majority feed on fish and crustaceans. They are typically ambush predators, hiding in cover on the reef and darting out to grab passing prey. Their bright colours are most likely a form of disruptive camouflage, similar to the stripes of a tiger
The tiger (''Panthera tigris'') is a large Felidae, cat and a member of the genus ''Panthera'' native to Asia. It has a powerful, muscular body with a large head and paws, a long tail and orange fur with black, mostly vertical stripes. It is ...
.
Many species are protogynous
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 hermaphrodit ...
hermaphrodite
A hermaphrodite () is a sexually reproducing organism that produces both male and female gametes. Animal species in which individuals are either male or female are gonochoric, which is the opposite of hermaphroditic.
The individuals of many ...
s, meaning they start out as females and change sex to male later in life. They produce large quantities of eggs and their larvae are planktonic
Plankton are the diverse collection of organisms that drift in water (or air) but are unable to actively propel themselves against currents (or wind). The individual organisms constituting plankton are called plankters. In the ocean, they pro ...
, generally at the mercy of ocean currents until they are ready to settle into adult populations.
Like other fish, serranids harbour parasite
Parasitism is a Symbiosis, close relationship between species, where one organism, the parasite, lives (at least some of the time) on or inside another organism, the Host (biology), host, causing it some harm, and is Adaptation, adapted str ...
s, including nematode
The nematodes ( or ; ; ), roundworms or eelworms constitute the phylum Nematoda. Species in the phylum inhabit a broad range of environments. Most species are free-living, feeding on microorganisms, but many are parasitic. Parasitic worms (h ...
s, cestode
Cestoda is a class of parasitic worms in the flatworm phylum (Platyhelminthes). Most of the species—and the best-known—are those in the subclass Eucestoda; they are ribbon-like worms as adults, commonly known as tapeworms. Their bodies co ...
s, digenea
Digenea (Gr. ''Dis'' – double, ''Genos'' – race) is a class of trematodes in the Platyhelminthes phylum, consisting of parasitic flatworms (known as ''flukes'') with a syncytial tegument and, usually, two suckers, one ventral and one or ...
ns, monogenea
Monogeneans, members of the class Monogenea, are a group of ectoparasitic flatworms commonly found on the skin, gills, or fins of fish. They have a direct lifecycle and do not require an intermediate host. Adults are hermaphrodites, meaning they ...
ns, isopod
Isopoda is an Order (biology), order of crustaceans. Members of this group are called isopods and include both Aquatic animal, aquatic species and Terrestrial animal, terrestrial species such as woodlice. All have rigid, segmented exoskeletons ...
s, and copepod
Copepods (; meaning 'oar-feet') are a group of small crustaceans found in nearly every freshwater and saltwater habitat (ecology), habitat. Some species are planktonic (living in the water column), some are benthos, benthic (living on the sedimen ...
s. A study conducted in New Caledonia
New Caledonia ( ; ) is a group of islands in the southwest Pacific Ocean, southwest of Vanuatu and east of Australia. Located from Metropolitan France, it forms a Overseas France#Sui generis collectivity, ''sui generis'' collectivity of t ...
has shown that coral reef
A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in group ...
-associated serranids harbour about 10 species of parasites per fish species.
Classification
In recent times, this family has been proposed to be split. The two hypothetical families emerging from the remains of the possibly-obsolete taxon are the families Epinephilidae and Anthiadidae. This taxonomic separation is recognized by some authorities, including the IUCN.
Recent molecular classifications challenge the validity of the genera ''Cromileptes
The humpback grouper (''Cromileptes altivelis''), also known as the panther grouper, (in Australia) barramundi cod, (in the Philippines, in Tagalog) lapu-lapung senorita, (in the Philippines, in Bisayan) miro-miro, (in Japan) sarasa-hata, (in I ...
'' (sometimes spelled ''Chromileptes
The humpback grouper (''Cromileptes altivelis''), also known as the panther grouper, (in Australia) barramundi cod, (in the Philippines, in Tagalog) lapu-lapung senorita, (in the Philippines, in Bisayan) miro-miro, (in Japan) sarasa-hata, (in I ...
'') and '' Anyperodon''. Each of these two genera has a single species, which were included in the same clade as species of ''Epinephelus
''Epinephelus'' is a genus of marine ray-finned fish, groupers from the subfamily Epinephelinae, part of the family Serranidae, which also includes the anthias and sea basses. They are predatory fish, largely associated with reefs and are fo ...
'' in a study based on five different genes.
The subfamilies and genera are as follows:
Notes
References
* * {{Authority control Marine fish families Taxa named by William Swainson