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Overview |
Main identification features
- red-brown + white stripe - eye to c
- 2 dorsal fin fins partly joined, dark bases; 2nd dorsal fin : 13
- tail fin base - large dark crescent
Slender, compressed body; distinctly depressed head; mouth small, at front, oblique; lower jaw projecting; dorsal fins partly connected at their bases, VII + I,13; anal fin I, 13; pectoral fin 16-18; head without pores; eye relatively small; pelvics partly connected, form a plate rather than a disc, no membrane between the spines; no scales.
Red-brown head and body; with a cream stripe running from snout through eye to top of tail fin base and extending as a blotch onto upper part of tail fin; head and body darker below than above cream stripe; inner half of dorsal, tail and pectoral fins grey-brown, outer halves clear; pelvics and anal clear.
Size: to 7.2 cm
Habitat: In rock crevices.
Depth: 6 m.
Known only from the mouth of the Panama Canal.
Attributes
Abundance: Common.
Cites: Not listed.
Climate Zone: Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo).
Depth Range Max: 6 m.
Depth Range Min: 0 m.
Diet: mobile benthic worms; mobile benthic crustacea (shrimps/crabs); mobile benthic gastropods/bivalves.
Eastern Pacific Range: Northern limit=9; Southern limit=9; Western limit=-80; Eastern limit=-80; Latitudinal range=1; Longitudinal range=1.
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; Mangrove; Soft bottom (mud, sand,gravel, beach, estuary & mangrove); Soft bottom only; Freshwater.
Inshore Offshore: Inshore; Inshore Only.
IUCN Red List: Not evaluated / Listed.
Length Max: 7.2 cm.
Regional Endemism: Continent only; Continent; TEP endemic; Continental TEP endemic; Panamic province endemic; All species.
Residency: Resident.
Salinity: Brackish; Freshwater; Non 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 |
- Hoese , D. F. and Reader, S., 2001., Revision of the eastern Pacific species of Gobulus (Perciformes: Gobiidae), with description of a new species., Revista de Biologia Tropical, 49(Supplement 1):169-176.
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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=Gobulus&speciesname=birdsongi ---> http://192.134.151.83/Summary/speciesSummary.php?genusname=Gobulus&speciesname=birdsongi http://192.134.151.83/Summary/speciesSummary.php?genusname=Gobulus&speciesname=birdsongi ---> https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Gobulus&speciesname=birdsongi https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Gobulus&speciesname=birdsongi ---> https://fishbase.mnhn.fr/summary/Gobulus-birdsongi.html
Gobulus birdsongi, Fin-joined goby
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Gobulus birdsongi
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Robertson, R.
Teleostei (teleosts) >
Gobiiformes
(Gobies) >
Gobiidae
(Gobies) > Gobiinae
Etymology:
birdsongi:
Named for Ray Birdsong, a long time friend and colleague of the senior author.
.
More on authors:
Hoese
&
Reader
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range 13 - 20 m (Ref.
92840
). Tropical
Eastern Central Pacific: Panama.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 5.8 cm SL (female)
Dorsal
spines
(total): 8;
Dorsal
soft rays
(total): 13;
Anal
soft rays
: 13;
Vertebrae
: 27. . This species is distinguished by the following set of characters: D2 I,11; A I,13; pectoral rays 16-18; eye small, 1.4 mm in length (2:46 and 58 mm SL); D1 connected to base of D2; pelvic interspinal membrane is very reduced; fifth pelvic ray is subequal in length to fourth ray; upper edge of the dark body stripe well above midside of body (Ref.
87545
).
Cryptic, benthic and found on sandy bottoms near rocks or corals (Ref.
92840
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
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
)
Critically Endangered (CR)
(B1ab(ii,iii)+2ab(ii,iii)); Date assessed:
23 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
= 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00708 (0.00333 - 0.01504), b=3.09 (2.92 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 3.3 ±0.3 se; based on size and trophs of closest relatives
Resilience (Ref.
120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153
): Low vulnerability (10 of 100).
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Updated: 2024-04-19 16:11:16 gmt
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