greenling

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greenling,

common name for any of several species of carnivorous, spiny-finned fishes of the family Hexagrammidae, common in the Pacific Ocean, especially in the waters N of Monterey, Calif. Greenlings have fleshy flaps on the top of the head. They are found in kelp beds and among rocks, and are also called rock trout. Several species grow to a length of 20 in. (50 cm) and are valued as game fishes. Most important of the greenlings is the Okhotsk atka mackerel, found in the Sea of Okhotsk; it is a handsome food fish with striking vertical stripes, as is the closely related atka mackerel of Alaska. The ling cod, found from Alaska to Baja California, is a popular game and food fish. The kelp greenling is unusual in that the male and female exhibit different coloration and markings, a rare phenomenon among fish. Greenlings are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Actinopterygii, order Scorpaeniformes, family Hexagrammidae.
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Greenlings are bottom fish that live around rock reefs in coastal waters, the paper said.
TEPCO claimed that the recorded Cesium level was 258 times the government limit for safe consumption, adding that it will check further for contamination of greenling and sea creatures that bottom fish feed on, including crabs and prawns.
The Fisheries Agency said that though overall contamination levels in fishes near the surface and at medium depths have been declining, but, relatively high levels of radioactive Cesium continue to be detected in bottom fish, such as greenling and flounder, and in fresh water fish regardless of their usual depth, it added.
Paternal defense, cannibalism and polygamy: factors influencing the reproductive success of painted greenling (Pisces, Hexagrammidae).
Greenlings (primarily kelp greenling [Hexagrammos decagrammus]) accounted for the majority of sightings (35% of total abundance) and their presence did not differ among months (Table 2).
In particular, greenlings associated most consistently with kelp beds that had a predominately rocky (i.e., large cobble/bedrock) and structurally complex bottom habitat.
For example, although greenlings were observed in the shallow, rocky nearshore sites during every month in the present study, rockfishes and codfishes were rarely observed except in summer.
In one northern California study, densities of kelp greenling in Nereocystis beds were four times greater than in the present study (Bodkin, 1986).