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Alosa chrysochloris

(skipjack herring)

Overview

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Interesting Facts

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Common Names

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Click on the language to view common names.

Common Names in Czech:

Placka Mississippsk, Placka mississippská

Common Names in Danish:

Bl, Blå stamsild

Common Names in English:

blue herring, golden shad, green herring, River herring, Skipjack, skipjack herring, skipjack shad

Common Names in Finnish:

Hyppij, Hyppijäsilli

Common Names in French:

Alose Dor, Alose dorée

Common Names in Mandarin Chinese:

墨西哥湾西鲱, 墨西哥灣西鯡, 金色大眼鯡, 金色大眼鲱

Common Names in Russian:

зеленоспинка

Common Names in Spanish:

Sábalo del Golfo

Description

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Physical Description

Species Alosa chrysochloris

Body: Mouth and Snout: Slightly superior, upturned, very large obvious maxillary extending almost to the middle of the eye. There are 20-30 gill rakers. The skipjack herring has small teeth that can be seen and felt. No barbels . Body Pattern : The body and fins are solid silvery or golden. There may be a row of dusky shoulder spots. Cycloid scales . Body Shape : Laterally compressed . Typical adult size is 250-450 mm TL (11-16 inches), with a maximum of about 550 mm.

Fins: One single dorsal fin without an elongated last ray located in the middle of the back. The anal fin has 17-18 rays, and the tail is deeply forked . The pelvic fins are abdominal and located just below the dorsal fin. The origin of pelvic fins is even with or slightly behind the origin of the dorsal fin. Pelvic abdominal fins with axillary processes. No adipose fin .

Distinguishing characteristics: Members of the herring family in Wisconsin have a keel-like belly with projecting scales that have a saw-tooth texture . The keel extends from vent forward to isthmus. The skipjack herring has visible teeth in its jaw. Dorsal fin typically with 17 rays, none are longer , and origin forward of origin of pelvic fins. 18 anal fin rays; superior mouth ; 20-30 gill rakers on first gill arch; no gular membrane ; no lateral line and 53-60 scales in lateral series. See also similar species information.

Breeding adults: Same.

Juveniles : Juveniles are not as deep-bodied as adults.

Size/Age/Growth

Males are commonly 38 cm (Standard Length) in length when caught/marketed, but may be as large as 50 cm (Standard Length).

Habitat

Biome: Marine .

Biology

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Diet

Feeds on small fishes , the juveniles on insects.

Reproduction

Spawning times and places not certain.

Migration

Anadromous . Enters brackish- and freshwaters , but perhaps not always or not consistently anadromous, although strongly migratory within rivers , mostly in fast-flowing water where they are renowned for leaping.

Behavior

Parasites:

Adults serve as hosts to the larvae (glochidia) of the economically valuable pearly mussel (Fusconaia ebena) of the Mississippi basin .

Taxonomy

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Synonyms

Alosa chrysochlorisCylindrosteus rafinesquii Duméril • Cylindrosteus scabiceps Fowler • Cylindrosteus scabriceps Fowler • Lepisosteus albus Rafinesque • Pomolobus chrysochlorisPomolobus chrysochloris Rafinesque • Pomolobus chrysochloris Rafinesque, 1820

Notes

Name Status: Accepted Name .

First described: Rafinesque C.S . Annals of nature, or annual synopsis of new genera and species of animals, plants etc. discovered in North America. First annual number for 1820 Lexington. pp. 20, 1820.

Last scrutiny: Data last modified by FishBase 24-Jul-1994

Similar Species

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Fish Name Keel Dorsal Fin Rays Anal Fin Rays Mouth/Teeth Gill Rakers Gular Membrane Lateral Line Similarity Index Comments Alewife Scaled, saw-like keel extending from vent forward to isthmus (gill area) Typically 13-14, no elongated rays and origin forward of origin of pelvic rays Typically 17-18 Superior mouth and teeth on jaws weak or absent 41-44 on 1st gill arch Absent Absent, 42-50 scales in lateral series Moderately similar Gizzard Shad Saw-like keel Typically 10-12 rays with last ray more than three times longer than adjacent ray and dorsal origin behind pelvic origin Typically 27-34 No teeth on jaws or tongue About 190 on 1st gill arch Absent Absent, 52-70 scales in lateral series Moderately similar Goldeye Fleshy keel, lacking scales and not saw-like Less than 13 rays 29-34 No teeth on jaws or tongue 15-17 Present Present, 57-62 scales in lateral series Moderately similar Mooneye Fleshy keel, lacking scales and not saw-like Less than 13 rays 26-29 No teeth on jaws or tongue 15-17 Present Present, 52-57 scales in lateral series Moderately similar Skipjack Herring Scaled, saw-like keel extending from vent forward to isthmus (gill area) Typically 17, no elongated rays and origin forward of origin of pelvic fins Typically 18 Superior mouth and teeth on jaws and tongue 20-30 on 1st gill arch Absent Absent, 53-60 scales in lateral series N/A Also moderately similar to deep-bodied shiners of the minnow family (Cyprinella, Luxilus, Notemigonus, Scardinius)

Members of the genus Alosa

ZipcodeZoo has pages for 40 species and subspecies in this genus:

A. aestivalis (Blueback Glut Herring) · A. agone (Agone) · A. alabamae (Alabama Shad?names of Fishes 67) · A. alburnus (Caspian Marine Shad) · A. algeriensis (North African Shad) · A. alosa (Blueback Glut Herring) · A. alosa alosa (Blueback Glut Herring) · A. braschnikowi (Brazhnikov's Shad) · A. braschnikowi braschnikowi (Caspian Marine Shad) · A. braschnikowi sarensis (Caspian Marine Shad) · A. brashnikovi (Caspian Marine Shad) · A. brashnikovi brashnikovi (Caspian Marine Shad) · A. caspia (Astrabad Shad) · A. caspia caspia (Caspian Shad) · A. caspia knipowitschi (Enzeli Shad) · A. caspia persica (Astrabad Shad) · A. chrysochloris (Skipjack Herring) · A. elongata (Elongate Ilisha) · A. fallax (Killarney Shad) · A. fallax fallax (Twaite Shad) · A. fallax nilotica (Killarney Shad) · A. immaculata (Kerch Black Sea Shad) · A. kessleri (Black-Back Shad) · A. killarnensis (Goureen) · A. macedonica (Macedonian Shad) · A. maeotica (Black Sea Shad) · A. mediocris (Shad Fall Herring) · A. nilotica (Mediterranean Shad) · A. pectinata (Brazilian Menhaden) · A. pontica (Kerch Black Sea Shad) · A. pseudoharengus (Anadromous Alewives) · A. reevesii (Seasonal Shad) · A. sapidissima (Connecticut River Shad) · A. saposchnikowii (Bigeye Shad) · A. saposhnikovi (Saposhnikovi Shad) · A. sphaerocephala (Agrakhana Shad) · A. sp. nov. 'Skadar' (Skadar Shad) · A. tanaica (Black Sea Shad) · A. teres (California Round Herring) · A. volgensis (Caspian Anadromous Shad)

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal March 01, 2008:

Identifiers

Last Revised: 7/14/2012