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Overview |
Main identification features
- snout rounded
- golden brown
- tail fin 15-17
- preopercle - no top pore
- pectoral: 17-21
Body elongate, somewhat compressed; head wide (usually >10% of SL) and deep (height ~16.9% of SL); wide between eyes; snout rounded; a sharp spine on opercle that has 1 tip; eye relatively large (1.5-2.5% of SL); upper part of preopercle without a pore; gill rakers 12-16; origin of dorsal fin at level of middle of pectoral fins; pelvic fins inserted below rear part of head; dorsal rays 68-80; anal rays 51-59; anal fin origin under dorsal rays 21-27; pectoral rays 17-21; tail fin rays 15-17; body covered with overlapping, small scales, about 110 in midlateral series; cheek without or with a few scattered scales; belly with scales; penis curved, abruptly tapering to tip; 2 pairs of moderately large pseudoclaspers associated with penis, outer pair with a broad base and a long, backward directed support with a sharp tip, inner pseudoclaspers strongly inclined forward, about length of outer pseudoclasper, with sharp tip at front and a fleshy flap at rear.
Reddish brown body and fins
Size: reaches 6.1 cm.
Inhabits shallow reefs and tide pools.
Depth: 0.5-10 m.
Endemic to the Galapagos.
Attributes
Abundance: Common.
Cites: Not listed.
Climate Zone: Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo).
Depth Range Max: 10 m.
Depth Range Min: 0.5 m.
Diet: bony fishes; mobile benthic crustacea (shrimps/crabs).
Eastern Pacific Range: Northern limit=2; Southern limit=-2; Western limit=-93; Eastern limit=-90; Latitudinal range=4; Longitudinal range=3.
Egg Type: Live birth; Pelagic larva.
Feeding Group: Carnivore.
FishBase Habitat: Reef Associated.
Global Endemism: Tropical Eastern Pacific (TEP) endemic; East Pacific endemic; All species.
Habitat: Reef associated (reef + edges-water column & soft bottom); Rocks; Reef (rock &/or coral); Reef only.
Inshore Offshore: Inshore; Inshore Only.
IUCN Red List: Not evaluated / Listed.
Length Max: 6.1 cm.
Regional Endemism: Island (s); Island (s) only; TEP endemic; TEP oceanic island (s) endemic; Galapagos Islands 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 |
- Cohen , D. M. and McCosker, J. E., 1998., A new species of Bythitid fish, genus Lucifuga, from the Galápagos Islands., Bull. Mar. Sci., 63:179-187.
- Møller, P.R., Schwarzhans, W., Nielsen, J.G., 2005., Review of the American Dinematichthyini (Teleostei: Bythitidae). Part II. Ogilbia., Aqua, 10:133-207.
- Poll , M. and Van Mol, J. J., 1966., Au sujet d'une espece inconnue de Brotulidae littoral des iles Galapagos, apparentee a l'espece aveugle Caecogilbia galapogensis Poll et Leleup., Bull. Cl. Sci. Acad. Roy. Belg. Series 5, 52(11):1444-1461.
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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=Ogilbia&speciesname=deroyi ---> http://192.134.151.83/Summary/speciesSummary.php?genusname=Ogilbia&speciesname=deroyi http://192.134.151.83/Summary/speciesSummary.php?genusname=Ogilbia&speciesname=deroyi ---> https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Ogilbia&speciesname=deroyi https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Ogilbia&speciesname=deroyi ---> https://fishbase.mnhn.fr/summary/Ogilbia-deroyi.html
Ogilbia deroyi, Deroy's cuskeel
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Deroy's cuskeel
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Ogilbia deroyi
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Allen, G.R.
Teleostei (teleosts) >
Ophidiiformes
(Cusk eels) >
Dinematichthyidae
(Viviparous brotula)
Etymology:
Ogilbia:
Taken from Ogilby, 1887-1915, icthiologist and zoologist (Ref.
45335
)
.
More on authors:
Poll
&
van
Mol
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; reef-associated; depth range 0 - 10 m (Ref.
57883
). Tropical
Southeast Pacific: Galapagos Islands.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 7.0 cm TL male/unsexed; (Ref.
11482
)
Dorsal
soft rays
(total): 68-80;
Anal
soft rays
: 51 - 59;
Vertebrae
: 39 - 43. This species is characterized by the following: vertebrae 11-12 + 27-31 = 39-43, dorsal fin rays 68-80, anal fin rays 51-59; outer pseudoclasper with a broad base and long supporter with sharp, pointed tip; inner pseudoclasper is anteriorly inclined, of about length of outer pseudoclasper, with sharp, spine-like tip anteriorly and fleshy flap posteriorly; isthmus between pseudoclaspers wide, penis with abrupt change in thickness; opercular spine with a single, sharp tip; cheeks naked or with few isolated scales (less than 10 scales all together); otolith length: height ratio 2.1-2.2; upper preopercular pore absent (Ref.
57883
).
Inhabits rocky crevices (Ref.
11482
). Two paratypes that were collected at low tide between blocks of lava in about 50 cm of water, were observed to move slowly close to the sand bottom. Experiments that were carried out showed that
O. deroyi
can tolerate a wide variation in salinity, but not the low salinity in which
O. galapagosensis
lives. Consequently, there is an ecological barrier separating the two species. Only about five embryos were observed in ripe females (Ref.
57883
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Møller, P.R., W. Schwarzhans and J.G. Nielsen
, 2005. Review of the American Dinematichthyini (Teleostei: Bythitidae). Part II.
Ogilbia
. aqua, J. Ichthyol. Aquat. Biol. 10(4):133-207. (Ref.
57883
)
IUCN Red List Status (Ref.
130435
)
Least Concern (LC)
; Date assessed:
29 April 2008
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
Fisheries: of no interest
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Zoological Record
Estimates based on models
Preferred temperature (Ref.
123201
): 23.6 - 24.6, mean 23.9 °C (based on 12 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
): 3.3 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref.
120179
): Low, minimum population doubling time 4.5 - 14 years (Assuming Fec < 100).
Fishing Vulnerability (Ref.
59153
): Low vulnerability (10 of 100).
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- 20 July 2016
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Updated: 2024-06-20 08:41:20 gmt
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