Scorpaeniformes

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Scorpaeniformes

[skȯr‚pē·nə′fōr‚mēz]
(vertebrate zoology)
An order of fishes coextensive with the perciform suborder Cottoidei in some systems of classification.

Scorpaeniformes

 

an order of bony fishes. (Some ichthyologists include Scorpaeniformes in the order Perciformes.) The posterior end of the second suborbital ossicle is an appendage of varying shape that usually reaches the preopercle. In most species the pelvic fins are located beneath the pectorals; there usually are two dorsal fins. The swim bladder, which is not present in all species, is not joined to the esophagus.

There are six suborders, embracing 31 families (about 300 genera). The fishes are distributed in all seas—from the arctic to the antarctic—and in fresh waters of Eurasia and North America. They are predominantly benthic and bathypelagic; a few species, for example, those of the genera Pleurogrammus and Comephorus, are pelagic. Some species deposit roe, and others are viviparous (Sebastes). A number of species care for their young (Cyclopterus).

Many Scorpaeniformes are commercially valuable. Some species, for example, the fire-fish and the stonefish, are armed with spines, at the base of which are glands that secrete an extremely toxic substance; stings are very dangerous, even for humans.

References in periodicals archive ?
The Northern Inland Waters Stock of Harbor Seals was represented by 1792 scat samples; 64.06% of these contained clupeiform fishes, 47.04% contained perciform fishes, 44.68% contained gadiform fishes, and 21.23% contained scorpaeniform fishes.
Coastal stocks of Pacific Harbor Seals largely consumed pleuronectid or clupeiform fishes, while the diet of the inland stocks of seals also consisted largely of perciform, gadiform, salmoniform, and scorpaeniform fishes.
In winterspring, of 28 orders identified, Clupeiformes was most prevalent in the diet (56.62% FO), followed by Gadiformes (48.74%), Perciformes (29.67%), Pleuronectiformes (24%), and Scorpaeniformes (22.42%).
The commonest are the roes of the common striped mullet (Mugil cephalus), and especially lumpfish roe from the sea hen (Cyclopterus lumpus), a scorpaeniform from the North Sea which spawns small (1-2 mm diameter), greenish eggs, which are often dyed black.
This work was closely followed by a study (Tsuyuki et al., 1968) examining hemoglobin, eye lens, and muscle protein electrophoretic patterns in numerous species of Sebastes from both the Atlantic and Pacific, as well as representatives of other scorpaeniform genera.
Sebastes is very provisionally placed in the order Scorpaeniformes, suborder Scorpaenoidei, family Sebastidae, subfamily Sebastinae (Nelson, 1994).
The larvae of many scorpaeniforms, including the scorpaenoids, have parietal and other head spines, which are not seen in larvae of other fishes.
Sebastes moseri (Scorpaeniformes: Scorpaenidae): A new rockfish from the eastern North Pacific.
The mechanosensory system of the lateral line in the Scorpaeniformes order, has been studied in taxa like Liparidae (Chernova & Stein, 2004; Lanoo et al., 2009), Cottidae (Jones & Jansen, 1992; Telcean et al., 2005; Coombs & Grossman, 2006), Hexagrammidae (Wonsettler & Webb, 1997) and Normanichthyidae (Mandrytsa, 1993).
The obtained results strengthen the knowledge of the sensorial biology in this species, which will be crucial for further comparative studies with other members of the Scorpaeniformes order.
Demise of the Scorpaeniformes (Actinopterygii: Percomorpha): an alternative phylogenetic hypothesis.
Distribution patterns, larval growth and hatch dates of early stages of the mote sculpin Normanichthys crockeri (Scorpaeniformes, Normanichthyidae) in the upwelling ecosystem off central Chile.