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Overview |
Main identification features
- eyes small
- cheeks and belly - no scales
Body elongate but moderately deep and compressed; head relatively long (23.3-26.9% of SL), narrow between eyes; snout rounded; mouth small; rear 3 pores on lower jaw large (> rear nostril); a sharp spine on opercle that has 1 tip; eye small (~1.9% of SL), narrow between eyes; upper part of preopercle with a pore; gill rakers 13-16; origin of dorsal fin at level of middle of pectoral fins; pelvic fins inserted below rear part of head; dorsal rays 63-72; anal rays 49-56; origin of anal fin under dorsal rays 19-23; pectoral rays 18-20; tail fin rays 14-16; body covered with relatively small, scarce overlapping scales; cheek and belly without scales; penis broad, curved, pointed; 2 pairs of moderately large pseudoclaspers associated with penis, outer pair broad, wing shaped, slightly expanded at tip, inner pair with 2 branches, front one bending forwards, rear one bending backwards, with a fleshy lobe in between.
Preserved fish pale brown
Size: reaches 8.3 cm.
Inhabits shallow reefs.
Depth: 0-30 m.
Known only from the Gulf of California.
Attributes
Cites: Not listed.
Climate Zone: Northern Subtropical (Cortez Province + Sinaloan Gap).
Depth Range Max: 30 m.
Depth Range Min: 0 m.
Diet: mobile benthic crustacea (shrimps/crabs); bony fishes.
Eastern Pacific Range: Northern limit=29; Southern limit=24; Western limit=-112; Eastern limit=-110; Latitudinal range=5; Longitudinal range=2.
Egg Type: Live birth; Pelagic larva.
Feeding Group: Carnivore.
Global Endemism: East Pacific endemic; Tropical Eastern Pacific (TEP) endemic; All species.
IUCN Red List: Not evaluated / Listed.
Length Max: 8.3 cm.
Regional Endemism: TEP endemic; Continental TEP endemic; Cortez province endemic; Continent only; Continent; All species.
Residency: Resident;
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Links to other sites |
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References |
- Møller, P.R., Schwarzhans, W., Nielsen, J.G., 2005., Review of the American Dinematichthyini (Teleostei: Bythitidae). Part II. Ogilbia., Aqua, 10:133-207.
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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=nudiceps ---> http://52.67.158.155/Summary/speciesSummary.php?genusname=Ogilbia&speciesname=nudiceps http://52.67.158.155/Summary/speciesSummary.php?genusname=Ogilbia&speciesname=nudiceps ---> https://fishbase.net.br/Summary/speciesSummary.php?genusname=Ogilbia&speciesname=nudiceps https://fishbase.net.br/Summary/speciesSummary.php?genusname=Ogilbia&speciesname=nudiceps ---> https://fishbase.net.br/summary/Ogilbia-nudiceps.html
Ogilbia nudiceps, Slickhead brotula
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drawing shows typical species in Dinematichthyidae.
Teleostei (teleosts) >
Ophidiiformes
(Cusk eels) >
Dinematichthyidae
(Viviparous brotula)
Etymology:
Ogilbia:
Taken from Ogilby, 1887-1915, icthiologist and zoologist (Ref.
45335
)
;
nudiceps:
Named for the scale-less head; 'nudi' = naked and 'ceps' = head.
.
More on authors:
Møller
,
Schwarzhans
&
Nielsen
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; reef-associated; depth range 0 - 30 m (Ref.
57883
). Tropical; 29°N - 22°N
Eastern Pacific: Gulf of California.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 5.3 cm SL male/unsexed; (Ref.
57883
); 7.4 cm SL (female)
Short description
Morphology
|
Morphometrics
Dorsal
soft rays
(total): 63-72;
Anal
soft rays
: 49 - 56;
Vertebrae
: 40 - 41. The species is characterized by having the following: Vertebrae 11 + 29-30 = 40-41, dorsal fin rays 63-72, anal fin rays 49-56; small eyes (1.4-2.6, x = 1.9 % SL); outer pseudoclasper broad wing-shaped with slightly expanded tip; inner pseudoclasper with two stout branches, anterior pointing forward, posterior straight, with fleshy lobe in between, penis with abrupt change from thick base to thin tip; opercular spine with single, sharp tip, no scales on cheeks; otolith elongate, length: height ratio 2.4 (Ref.
57883
).
Inhabits rocky and sandy bottoms. A 63 mm SL female specimen (USNM 375546) contained 160 embryos, 4-5 mm TL, with three short rows of small pigment spots posteriorly on the body. No eggs. A 55 mm SL female (SIO 65-185) contained about 600 eggs, 0.5 mm in diameter (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
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Estimates based on models
Preferred temperature (Ref.
123201
): 23 - 26.6, mean 24.3 °C (based on 56 cells).
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), 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
Fishing Vulnerability (Ref.
59153
): Low vulnerability (10 of 100).
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Page last modified by :
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Updated: 2024-04-24 12:18:08 gmt
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