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Overview |
Main identification features
- tan + rows large blue spots
- pectoral: 17-18
Dorsal rays XI,13-14; anal rays II,13-14; pectoral rays 18 (rarely 17); gill rakers on first arch 34-35; end of top jaw straight, without fringe at rear; upper jaw 51-53% of head length, same size in males and females; lips with inner papillae; front of roof of mouth without teeth; no broad flap under operculum; no cirrus at front nostril; body with 65-70 oblique scale rows.
Courting males white anteriorly and blackish on posterior half with large brown spot on anterior part of dorsal fin; females with orange-brown head and dark brown to blackish body, covered with relatively large blue spots; no obvious color inside mouth; small juveniles yellow with blue spots.
Maximum size about 10 cm.
Habitat: found in sandy rubble areas in colonies of up to several hundred fish with a minimal spacing of about 1m between individuals; each fish constructs a lid over their burrow entrance at dusk and rebuilds the opening each morning.
Depth: 5-25 m.
The lower half of Baja and the lower 3/4 of the Gulf of California.
Attributes
Abundance: Common.
Cites: Not listed.
Climate Zone: North Temperate (Californian Province &/or Northern Gulf of California); Northern Subtropical (Cortez Province + Sinaloan Gap); Northern Tropical (Mexican Province to Nicaragua + Revillagigedos).
Depth Range Max: 25 m.
Depth Range Min: 5 m.
Diet: zooplankton; bony fishes; pelagic fish larvae; pelagic fish eggs.
Eastern Pacific Range: Northern limit=30; Southern limit=21; Western limit=-115; Eastern limit=-106; Latitudinal range=9; Longitudinal range=9.
Egg Type: Brooded; Pelagic larva.
Feeding Group: Planktivore.
FishBase Habitat: Demersal.
Global Endemism: Tropical Eastern Pacific (TEP) endemic; East Pacific endemic; All species.
Habitat: Reef associated (reef + edges-water column & soft bottom); Sand & gravel; Soft bottom (mud, sand,gravel, beach, estuary & mangrove); Soft bottom only.
Inshore Offshore: Inshore; Inshore Only.
IUCN Red List: Not evaluated / Listed.
Length Max: 10 cm.
Regional Endemism: Continent; Continent only; TEP endemic; Continental TEP endemic; Cortez + Mexican provinces endemic; All species.
Residency: Resident.
Salinity: Marine; Marine Only.
Water Column Position: Bottom; Bottom only;
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Names |
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Links to other sites |
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References |
- Allen , G.R. and Robertson, D.R., 1991., Quatre especes nouvelles d'Opisthognathidae (Jawfishes) du Pacifique oriental tropical., Revue Francaise de Aquariologie, 18(2):47-52.
- Almenara Roldán, S. C., 2000., Demanda internacional en el manejo de especies marinas de ornato. En Aburto Oropeza, O. y C. A. Sánchez Ortiz (Eds.). Recursos arrecifales del Golfo de California, estrategias de manejo para las especies marinas de ornato., Universidad Autónoma de Baja California Sur:30-38.
- Bussing, W.A and Lavenberg, R.J., 2003., Four new species of eastern tropical Pacific jawfishes (Opistognathus: Opistognathidae)., Rev. Biol. Trop., 51:529-550.
- Findley, L.T., Hendrickx, M.E., Brusca, R.C., van der Heiden, A.M., Hastings, P.A., Torre, J., 2003., Diversidad de la Macrofauna Marina del Golfo de California, Mexico., CD-ROM versión 1.0. Projecto de la Macrofauna del Golfo . Derechos reservados de los autores y Conservación Internacional.
- Love, M.S., Mecklenburg, C.W., Mecklenburg, T.A., Thorsteinson, L.K., 2005., es of the West Coast and Alaska: a checklist of North Pacific and Artic Ocena species from Baja California to the Alaska-Yukon border., U.S. Department of the Interior, U.S. Geological Survey, Biological Resources Division, 288pp.
- Sánchez Ortíz , C. , Arreola Robles , J. L. , Aburto Oropeza , O. and Cortés Hernández, M., 1997., Peces de arrecife en la región de La Paz, B.C.S.. En Urbán Ramírez, J. y M. Ramírez Rodríguez (Eds.). La Bahía de La Paz investigación y conservación., Universidad Autónoma de Baja California Sur:189-200.
- Thomson , D.A. , Findley , L.T. and Kerstitch, A.N., 2000., Reef fishes of the Sea of Cortez., University of Texas Press(Revised Ed.):353.
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Acknowledgements |
I thank Ashley MacDonald and John Pickering, University of Georgia, for technical support in building this page.
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http://www.fishbase.org/Summary/speciesSummary.php?genusname=Opistognathus&speciesname=rosenblatti ---> http://192.134.151.83/Summary/speciesSummary.php?genusname=Opistognathus&speciesname=rosenblatti http://192.134.151.83/Summary/speciesSummary.php?genusname=Opistognathus&speciesname=rosenblatti ---> https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Opistognathus&speciesname=rosenblatti https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Opistognathus&speciesname=rosenblatti ---> https://fishbase.mnhn.fr/summary/Opistognathus-rosenblatti.html
Opistognathus rosenblatti, Blue-spotted jawfish
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Opistognathus rosenblatti
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Allen, G.R.
Teleostei (teleosts) >
Ovalentaria/misc
(Various families in series Ovalentaria) >
Opistognathidae
(Jawfishes)
Etymology:
Opistognathus:
Greek, opisthe = behind + Greek, gnathos = jaw (Ref. 45335); to the very elongate upper jaw of the type species of the genus,
Opistognathus nigromarginatus
(Ref.
128653
)
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; reef-associated; depth range ? - 12 m (Ref.
58018
). Tropical
Eastern Central Pacific: Gulf of California.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 10.0 cm TL male/unsexed; (Ref.
11482
)
Found in large colonies. Feeds on benthic and planktonic invertebrates. Covers its burrow entrance at dusk and rebuilds the opening each morning.
Life cycle and mating behavior
Maturity
|
Reproduction
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Spawning
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Eggs
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Fecundity
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Larvae
Allen, G.R. and D.R. Robertson
, 1994. Fishes of the tropical eastern Pacific. University of Hawaii Press, Honolulu. 332 p. (Ref.
11482
)
IUCN Red List Status (Ref.
130435
)
Least Concern (LC)
; Date assessed:
24 May 2007
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 3.5 ±0.41 se; based on food items.
Fishing Vulnerability (Ref.
59153
): Low vulnerability (10 of 100).
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