Clupeiformes

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Clupeiformes

[‚klü·pē·ə′fȯr‚mēz]
(vertebrate zoology)
An order of teleost fishes in the subclass Actinopterygii, generally having a silvery, compressed body.

Clupeiformes

 

an order of bony fishes. The body is usually silvery and laterally compressed. The pectoral fins are placed low, and the ventral fins are usually in the middle of the abdomen. There is a single, spineless dorsal fin. The fishes usually range in length from 5–6 to 60 cm and in weight from a few grams to 0.5 kg. Only a few species reach a length of 2–2.4 m. The scales are cycloid.

The order contains 15 suborders, embracing about 50 families. Amont the more important families are Clupeidae (herring), Engraulidae (anchovies), Salmonidae (trout), Thymallidae (graylings), Osmeridae (smelts), Daliidae (with the single species Dallia pectoralis), Chanidae (milkfishes), Esocidae (pikes), and Arapaimidae (with the single species Arapaima gigas). Some ichthyologists place a number of families into separate orders (for example, the orders Isospondyli and Haplomi).

The fishes of the order Clupeiformes are distributed in many seas and in some brackish and fresh waters. They are extremely important in commercial fishing, making up as much as one-fifth of the world’s fish catch.

REFERENCES

Promyslovye ryby SSSR: Opisaniia ryb (text to atlas). Moscow, 1949.
Zhizn’zhivotnykh, vol. 4, part 1. Moscow, 1971.
Nikol’skii, G. V. Chastnaia ikhtiologiia, 3rd ed. Moscow, 1971.
References in periodicals archive ?
On 2 December 2009 at 1309 h on the west side of Isla Tiburon, we observed a large (>1,500 individuals) group of blue-footed and brown boobies foraging on shoals of clupeiform fishes.
The anchovy (Engraulis encrasicolus), is a Teleostean clupeiform fish, a member of the Engraulidee family, about 6 inches long.
maculates fed mainly on clupeiform fish (anchovies and sardines), and less so on invertebrate species (shrimp and squid) (Naughton and Saloman 1981).
Fifty-three species of fish were captured in 218 hauls at 34 fixed stations, with clupeiform species dominating.
The central CC supports vast schools of clupeiform fishes that are essential prey items for fish and avian predators.
A more advanced study of aging POFs in cold-water species similar to the studies done for clupeiforms by Alday et al.
Summer diets were characterized by a wide breadth of prey item while caprellids and clupeiforms fishes dominated in winter.
Unidentified clupeiforms (engraulids and clupeids) were excluded from further analyses because their extreme concentrations and taxonomic ambiguity can often mask abundance and assemblage trends (Tolan et al.
Goosefish were almost exclusively piscivorous; 93% of the total diet consisted of a mixture of gadiforms, clupeiforms, perciforms, and several other fish groups.
The length-frequency figures were subdivided by three ecological groupings: clupeiforms (Clupeidae and Engraulidae); demersal taxa (predominantly Synodontidae and Blenniidae); and scombrids and carangids, to further assess whether any changes in the size of fish collected over the current intervals were due to a particular group.
It has been proposed that in clupeiforms, the decrease in egg size may result from maternal reduction of energy reserves over the spawning season, a switch in the stored energy from reproduction to growth, seasonal changes in the age structure of the spawning population, or changes during ovogenesis that are correlated with temperature (Blaxter and Hunter, 1982; Chambers, 1997, for a recent review).
57 mm/d) were within the same range reported for cohorts of other clupeiforms spawning at different times during the year or under different environmental conditions within the same spawning season (Methot and Kramer, 1979, Leak and Houde, 1987).