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Overview |
Main identification features
- eyes on stalks;no eye papillae
- body: 9-15 saddles, 2 stripes
- dorsal fin and a: join tail base
- mouth pigmented
- no scales over lateral linearch
- tail base: no ventral notch
Head large, flattened above, rounded and narrow at front; both lips with flaps; eyes on short stalks, without papillae; rear nostril at front edge of preorbital bone; dorsal fin origin on nape, 1st 4 spines separate from fin and without membranes, XI-XIV, 23-27; anal II, 28-32; pectoral usually 13 rays; lateral line scales 42-45; no scales above front part of lateral line; no notch under tail base; dorsal and anal fins joined by membranes to tail base; tail fin short (<12% of standard length) with branched rays.
Color variable: head lightly to heavily mottled with brown; inside mouth pigmented; 9-15 (usually 12) dark bars along upper body that are joined below to form a longitudinal stripe along flank; flank with 2-3 stripes; fins pale or streaked with brown.
Size: 9.3 cm
Habitat: sandy areas around estuaries.
Depth: 1-5 m.
Sinaloa, Mexico, to Panama.
Attributes
Abundance: Common.
Cites: Not listed.
Climate Zone: Northern Tropical (Mexican Province to Nicaragua + Revillagigedos); Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo).
Depth Range Max: 5 m.
Depth Range Min: 1 m.
Diet: mobile benthic worms; bony fishes; mobile benthic gastropods/bivalves; mobile benthic crustacea (shrimps/crabs).
Eastern Pacific Range: Northern limit=24; Southern limit=8; Western limit=-107; Eastern limit=-79; Latitudinal range=16; Longitudinal range=28.
Egg Type: Benthic; Pelagic larva.
Feeding Group: Carnivore.
FishBase Habitat: Demersal.
Global Endemism: Tropical Eastern Pacific (TEP) endemic; East Pacific endemic; All species.
Habitat: Estuary; 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: 9.3 cm.
Regional Endemism: Continent; Continent only; TEP endemic; Continental TEP endemic; Mexican + Panamic provinces endemic; All species.
Residency: Resident.
Salinity: Brackish; Marine.
Water Column Position: Bottom; Bottom only;
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Names |
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Links to other sites |
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References |
- Castri-Aguirre, J.L., Espinoza-Pérez, H. and Schmitter-Soto, J.J., 2002., Lista sitemática, biogeográfica y ecológica de la ictiofauna estuarino lagunar y vicaria de México. En: Lozano-Vilano, M. L. (Ed.). Libro Jubilar en Honor al Dr. Salvador Contreras Balderas., Universidad Autonoma de Nuevo León:117-142.
- Castro-Aguirre, J.L., 1999., Ictiofauna estuarino-lagunar y vicaria de México., Editorial Limusa S.A. de C.V.: 1-629pp.
- Dawson, C.E., 1975., Studies on eastern Pacific sand stargazers (Pisces: Dactyloscopidae). 2.Genus Dactyloscopus, with descriptions of new species and subspecies., Nat. Hist. Mus. Los Angeles Co. Sci. Bull., 22:1-61.
- 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.
- Lopez , M. I. and Bussing, W. A., 1982., Lista provisional de los peces marinos de la Costa Rica., Revista de Biologia Tropical, 30(1):5-26.
- Meek , S.E. and Hildebrand, S.F., 1928., The marine fishes of Panama. Part III., Field Mus. Nat. Hist., Zool. Ser. Publ., XV:709-1045.
- Miller , and Briggs,., 1962., Dactyloscopus amnis, a new sand stargazer from rivers of the Pacific slope of southern Mexico., Occ. Pap. Mus. Zool. Univ. Mich., (627):1-11.
- Van der Heiden , A. M. and Findley, L. T., 1988., Lista de los peces marinos del sur de Sinaloa, México., Anales del Centro de Ciencias del Mar y Limnologia de la Universidad Autonoma Nacional de Mexico, 15:209-224.
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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=Dactyloscopus&speciesname=amnis ---> http://192.134.151.83/Summary/speciesSummary.php?genusname=Dactyloscopus&speciesname=amnis http://192.134.151.83/Summary/speciesSummary.php?genusname=Dactyloscopus&speciesname=amnis ---> https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Dactyloscopus&speciesname=amnis https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Dactyloscopus&speciesname=amnis ---> https://fishbase.mnhn.fr/summary/Dactyloscopus-amnis.html
Dactyloscopus amnis, Riverine stargazer
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Teleostei (teleosts) >
Blenniiformes
(Blennies) >
Dactyloscopidae
(Sand stargazers)
Etymology:
Dactyloscopus:
Greek, daktylos = finger + Greek, skopein = to look (Ref.
45335
)
.
More on authors:
Miller
&
Briggs
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; brackish; demersal. Tropical
Eastern Central Pacific: Mexico.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Life cycle and mating behavior
Maturity
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Larvae
Eschmeyer, W.N. (ed.)
, 2003. Catalog of fishes. Updated database version of March 2003. Catalog databases as made available to FishBase in March 2003. (Ref.
46206
)
IUCN Red List Status (Ref.
130435
)
Least Concern (LC)
; Date assessed:
24 August 2018
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
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Estimates based on models
Preferred temperature (Ref.
123201
): 23.8 - 28.7, mean 27.5 °C (based on 20 cells).
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
): 4.2 ±0.6 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153
): Low vulnerability (10 of 100).
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Updated: 2024-06-20 02:13:08 gmt
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