Malacanthidae

Tilefishes are mostly small perciform marine fish comprising the family Malacanthidae. They are usually found in sandy areas, especially near coral reefs. Commercial fisheries exist for the largest species, making them important food fish. However, the U.S. Food and Drug Administration warns pregnant or breastfeeding women against eating tilefish and some other fish due to mercury contamination. Exceptionally colorful smaller species of tilefish are favored for aquariums. The family is further divided into two subfamilies: Latilinae, sometimes called the Branchiosteginae, and Malacanthinae. Some authors regard these subfamilies as two evolutionarily distinct families. The placement of this family within the Eupercaria is still uncertain. The 5th edition of Fishes of the World classifies them within the Perciformes but in a grouping of seven families that may have a relationship to Acanthuroidei, Monodactylidae, and Priacanthidae, while other authorities place it outside the Perciformes, at an order level but with its true relationships being incertae sedis. The following two subfamilies and five genera are classified within the family Malacanthidae, in total it contains 45 species. subfamily Latilinae Gill, 1862 genus Branchiostegus Rafinesque, 1815 genus Caulolatilus Gill, 1862 genus Lopholatilus Goode & Bean, 1879 subfamily Malacanthinae Poey, 1861 genus Hoplolatilus Günther 1887 genus Malacanthus Cuvier 1829 The two subfamilies appear to be morphologically different, with members of the Latilinae having deeper bodies bearing predorsal ridge and heads rounded to squarish in profile. In contrast, members of the Malacanthinae are more slender with elongated bodies lacking predorsal ridge and rounded head. They also differ ecologically, with latilines typically occurring below 50 m and malacanthines shallower than 50 m depth. Tilefish range in size from (yellow tilefish, Hoplolatilus luteus) to (great northern tilefish, Lopholatilus chamaeleonticeps) and a weight of . Both subfamilies have long dorsal and anal fins, the latter having one or two spines.

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Concepts associés (3)

Mercury in fish

The presence of mercury in fish is a health concern for people who eat them, especially for women who are or may become pregnant, nursing mothers, and young children. Fish and shellfish concentrate mercury in their bodies, often in the form of methylmercury, a highly toxic organomercury compound. This element is known to bioaccumulate in humans, so bioaccumulation in seafood carries over into human populations, where it can result in mercury poisoning.

Poisson

Les poissons sont des animaux vertébrés aquatiques à branchies, pourvus de nageoires dont le corps est généralement couvert d'écailles. On les trouve abondamment aussi bien dans les eaux douces, saumâtres et de mers : on trouve des espèces depuis les sources de montagnes (omble de fontaine, goujon) jusqu'au plus profond des mers et océans (grandgousier, poisson-ogre). Leur répartition est toutefois très inégale : 50 % des poissons vivraient dans 17 % de la surface des océans (qui sont souvent aussi les plus surexploités).

Produits de la mer

Les produits de la mer désignent les animaux ou plantes qui sont consommés par les êtres humains. Ils comprennent les animaux marins, comme les poissons, les mammifères marins, les fruits de mer (y compris les mollusques et crustacés), ainsi que les algues et plantes marines. On appelle pêche la récolte des produits de la mer sauvages. Leur élevage est appelé aquaculture, mariculture dont, dans le cas du poisson, pisciculture.