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Overview |
Main identification features
- grey and /or yellow
- d: 11
- soft dorsal and anal finshigh, at front
- a: 11
Body elliptical, oblong, robust, depth 44% of length, upper and lower profiles symmetrically convex; no hump or depression before eyes; teeth broad, compressed, with rounded to nearly straight tips, 1 row of about 36 on each jaw; top jaw relatively long, reaching under pupil; 22 short rakers on 1st gill arch; preopercle with minutely serrated vertical edge, angle rounded and with membrane; pectoral short (length 63% of head), slightly longer than pelvics, as long as from snout to edge of preopercle; pelvics inserted well behind pectorals, not reaching anus; dorsal fin XI,11, middle spines longer than longest rays, soft dorsal rather high; anal fin III,11, moderately high at front (longest ray 67% of length of base of soft fin), rays longer than on dorsal fin; tail wide, moderately forked, lobes as long as or a little longer than head; scales small, 67-72 below lateral line, 12 rows above lateral line, 22 below, 10-11 rows on cheeks; head scaly except before eyes, on jaws and snout and rounded part of preopercle; soft parts of fins scaly.
Color variable: dark-phase fish are uniform light grey with faint dark stripes along scale rows of flanks, opercle and lower jaw silvery, tips of jaws dusky, fins pale; yellow-phase individuals are entirely bright lemon yellow, with a dark eye; other individuals are dark variably blotched with yellow.
Size: reaches 40 cm.
Habitat: shallow rocky reefs.
Depth: 0-20 m.
Apparently restricted to the Revillagigedo Islands.
This species is similar to K. elegans but has a shallower body (44% vs 50% of length), no hump before the eyes, smaller scales (lateral scales 67-72 vs 59-63, cheek scale rows 10-11 vs 8-9, fewer dorsal fin rays (11 vs 13) a higher anal fin (longest ray is 67% vs 50% of length of base of soft fin) with fewer rays (11 vs 12) , broader, more compressed teeth, and a longer top jaw (reaches under pupil vs under front edge of eye). In addition the dark flank stripes are fainter and narrower in dark-phase K. lutescens.
Attributes
Abundance: Common.
Cites: Not listed.
Climate Zone: Northern Tropical (Mexican Province to Nicaragua + Revillagigedos).
Depth Range Max: 20 m.
Depth Range Min: 0 m.
Diet: benthic macroalgae; benthic microalgae.
Eastern Pacific Range: Northern limit=20; Southern limit=19; Western limit=-115; Eastern limit=-111; Latitudinal range=1; Longitudinal range=4.
Egg Type: Pelagic; Pelagic larva.
Feeding Group: Herbivore.
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); Flotsam; Reef only.
Inshore Offshore: Inshore; Inshore Only.
IUCN Red List: Not evaluated / Listed.
Length Max: 40 cm.
Regional Endemism: Island (s) only; Island (s); TEP endemic; TEP oceanic island (s) endemic; Revillagigedos Islands endemic; All species.
Residency: Resident.
Salinity: Marine; Marine Only.
Water Column Position: Bottom; Mid Water; Near Bottom; Near Surface; Surface; Bottom + water column;
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Links to other sites | |
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References |
- Gotshall, D.W., 1996., Fishes of Rocas Alijos. In Rocas Alijos. Ed. R. W. Schmieder. Cornell Expeditions., Kluwer Academic Publishers: 347-354.
- Jordan , D.S. and Evermann, B.W., 1898., The fishes of North and Middle America: a descriptive catalogue of the species of fish-like vertebrates found in the waters of North America, north of the Isthmus of Panama. Part II., Bull. U.S. Nat. Mus., 47:1241-2183.
- Jordan , D.S. and Gilbert, C.H., 1882., Notes on a collection of fishes made by Lieut. Henry E. Nichols, U.S.N., on the west coast of Mexico, with descriptions of new species., Proc. U.S. Nat. Mus., 4:225-233.
- Jordan , and McGregor,., 1898., List of fishes collected at the Revillagigedo archipelago and neighboring islands., Rept. U.S. Fisheries Comm., 24:271-284.
- Ricker, K.E., 1959., Fishes collected from the Revillagigedo Islands during the 1954-1958 cruises of the "Marijean."., Univ. Brit. Columbia Inst. Fish., Mus. Contrib., 4:10pp.
- Snodgrass , R. E. and Heller, E., 1905., Papers from the Hopkins Stanford Galapagos expedition, 1898-1899. XVII. Shorefishes of the Revillagigedo, Clipperton, Cocos and Galapagos Island., Proc. Wash. Acad. Sci., 6:333-427.
- Walker, B. W. and Baldwin, W. J., 1964., Provisional check list of fishes of the Revillagigedo islands., 18 pp.
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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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Following modified from FishBase
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Top | See original
http://www.fishbase.org/Summary/speciesSummary.php?genusname=Kyphosus&speciesname=lutescens ---> http://192.134.151.83/Summary/speciesSummary.php?genusname=Kyphosus&speciesname=lutescens
http://192.134.151.83/Summary/speciesSummary.php?genusname=Kyphosus&speciesname=lutescens ---> https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Kyphosus&speciesname=lutescens
https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Kyphosus&speciesname=lutescens ---> https://fishbase.mnhn.fr/summary/Kyphosus-lutescens.html
Kyphosus lutescens, Revillagigedo sea chub
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Kyphosus lutescens
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Teleostei (teleosts) >
Centrarchiformes
(Basses) >
Kyphosidae
(Sea chubs)
Etymology:
Kyphosus:
Greek, kyphos = bent (Ref.
45335
)
.
More on authors:
Jordan
&
Gilbert
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; reef-associated. Tropical
Distribution
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Faunafri
Eastern Central Pacific.
Size / Weight / Age
Maturity: L
m
?
range ? - ? cm
Life cycle and mating behavior
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Eggs
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Larvae
Sommer, C.
, 1995. Kyphosidae. Chopas. p. 1195-1200. In W. Fischer, F. Krupp, W. Schneider, C. Sommer, K.E. Carpenter and V. Niem (eds.) Guia FAO para Identification de Especies para lo Fines de la Pesca. Pacifico Centro-Oriental. 3 Vols. FAO, Rome. (Ref.
9310
)
IUCN Red List Status (Ref.
130435
)
Least Concern (LC)
; Date assessed:
23 May 2007
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
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Zoological Record
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=0.01820 (0.00772 - 0.04289), b=3.01 (2.81 - 3.21), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 2.0 ±0.00 se; based on food items.
Resilience (Ref.
120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153
): Moderate to high vulnerability (47 of 100).
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- 20 July 2016
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Updated: 2024-04-16 15:22:47 gmt
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