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Bathygobius lineatus (Jenyns, 1842)
SOUTHERN FRILLFIN
Life   Vertebrata   Fish   Gobiidae   Bathygobius

Bathygobius lineatus
© Copyright Gerald Allen, 2006 · 0
Bathygobius lineatus

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Bathygobius lineatus
© Copyright Roger Steene, 2006 · 0
Bathygobius lineatus
Bathygobius lineatus
© Copyright Photographer/SFTEP, 2002 · 0
Bathygobius lineatus
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Overview
Main identification features
  • 3 dark spots after eye - 3rd large
  • 1st dorsal fin ; striped, outer part clear
  • head with white spots
  • pectoral: free rays - 1 branch
Dorsal rays VI + I, 9; anal rays I, 8; pectoral rays 19-21, the uppermost 5 rays forming free filaments (ie. not connected with adjoining rays by a membrane) 1st to 4th rays branch only once; tail fin with 25-32 rays; midlateral scales 30-37; predorsal scales not reaching eyes, remainder of head usually scaleless (B. l. arundelii sometimes with scales on opercle) pelvic disc eliptical, sometimes reaching to anus, its front membranes with small side lobes.

Generally light brown with several diffuse brown saddles across back; a clearly defined midlateral longitudinal row of alternating dark brown and white blotches; lower portion of head dark brown with scattered white spots; 1st dorsal fin with a clear outer edge and dark inner stripes, innermost ones darkest at rear; last of three dark blotches behind eye is much larger than 1st.

Size: to about 12 cm.

Inhabits rocky shores, common in tide pools.

Depth: 0-2 m.

An island species found at Clipperton, the Galapagos Islands and Lobos de Afuera in northern Peru. Miller et al 2001 recognized a different subspecies at each of these three localities -B. lineatus arundelii, B. l. lineatus and B. l. lupinus, respectively.


Attributes
Abundance: Common.
Cites: Not listed.
Climate Zone: Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo); South Temperate (Peruvian Province ).
Depth Range Max: 2 m.
Depth Range Min: 0 m.
Diet: mobile benthic worms; mobile benthic crustacea (shrimps/crabs); mobile benthic gastropods/bivalves.
Eastern Pacific Range: Northern limit=11; Southern limit=-7; Western limit=-110; Eastern limit=-81; Latitudinal range=18; Longitudinal range=29.
Egg Type: Benthic; Pelagic larva.
Feeding Group: Carnivore.
FishBase Habitat: Demersal.
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: 12 cm.
Regional Endemism: Island (s) only; Island (s); TEP endemic; TEP oceanic island (s) endemic; Multiple oceanic islands endemic; All species.
Residency: Resident.
Salinity: Marine; Marine Only.
Water Column Position: Bottom; Bottom only;


Names
Scientific source:

Links to other sites

References
  • Allen , G.R. and Robertson, D.R., 1997., An Annotated Checklist of the fishes of Clipperton Atoll, Tropical Eastern Pacific., Revista de Biologia Tropical, 45:813-843.
  • Birdsong , R. S. , Murdy , E. O. and Pezold, F. L., 1988., A study of the vertebral column and median fin osteology in gobioid fishes with comments on gobioid relationships., Bull. Mar. Sci., 42:174-214.
  • Fischer , W. , Krup , F. , Schneider , W. , Sommer , C. , Carpenter , K. E. and Niem, V. H., 1995., Guia FAO para la Identificacion de Especies de para los fines de la Pesca. Pacifico Centro-Oriental. Volumen II. Vertebrados - Parte 1., FAO2:647-1200.
  • Fowler, H.W., 1944., Results of the Fifth George Vanderbilt Expedition (1941) (Bahamas, Caribbean sea, Panama, Galapagos Archipelago and Mexican Pacific Islands). The Fishes., Acad. Nat. Sci. Philadel., Monographs, 6:57-529.
  • Ginsburg, I., 1947., American species and subspecies of Bathygobius, with a demonstration of a suggested modified system of nomenclature., J. Wash. Acad.Sci., 37(1):275-284.
  • Jenyns, L., 1842., Fish. In: C. Darwin, ed. The zoology of the voyage of H.M.S. 'Beagle' under the command of Captain Fitzroy, R.N. during the years 1832 to 1836. Issued in 4 parts., Smith, Elder & Co.:i-xvi + 1-172.
  • Miller , P. J. and Stefanni, S., 2001., The eastern Pacific species of Bathygobius (Perciformes: Gobiidae)., Revista de Biologia Tropical, 49(Supplement 1):141-156.
  • Robertson , D.R. and Allen, G.A., 1996., Zoogeography of the shorefish fauna of Clipperton Atoll., Coral Reefs, 15:121-131.

Acknowledgements

I thank Ashley MacDonald and John Pickering, University of Georgia, for technical support in building this page.


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Bathygobius lineatus, Southern frillfin
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Genus + Species (e.g. Gadus morhua)

Bathygobius lineatus ( Jenyns , 1841 )

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Pictures | Google image Image of Bathygobius lineatus (Southern frillfin) Bathygobius lineatus
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Classification / Names Common names | Synonyms | Catalog of Fishes( genus , species ) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Gobiiformes (Gobies) > Gobiidae (Gobies) > Gobiinae
Etymology: Bathygobius: Greek, bathys = deep + Latin, gobius = gudgeon (Ref. 45335 ) .
More on author: Jenyns .

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; demersal. Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Eastern Central Pacific: from Galapagos ( B. lineatus lineatus ), Clipperton Is. (as B. lineatus arundelli ), and Lobos de Afuera, small islands about 40 mi off northern Peru ( B. lineatus lupinus ).

Size / Weight / Age

Maturity: L m   ?   range ? - ? cm
Max length : 12.0 cm TL (female)

Short description Morphology | Morphometrics

Dorsal spines (total): 7; Dorsal soft rays (total): 9; Anal spines : 1; Anal soft rays : 8. Pectoral rays 19-21; uppermost five rays more or less free from membrane, first to fourth branching only once; pelvic disc elliptical, reaching at least four-fifths to part of fin pale; second dorsal fin with dark and pale bands; anal fin dusky, with with dark line proximal to white distal edge; caudal fin with dark markings more or less defined (Ref. 87607 ).

Biology     Glossary (e.g. epibenthic)

Collected from intertidal rock-pools, where this species is said to dominate the shallow tidepool habitat (Ref. 87607 ).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Miller, P.J. and S. Stefanni , 2001. The Eastern Pacific species of Bathygobius (Perciformes: Gobiidae). Rev. Biol. Trop. 49(Supl.1):141-156. (Ref. 87607 )

IUCN Red List Status (Ref. 130435 )

  Vulnerable (VU)  (D2); Date assessed: 21 May 2007

CITES

Not Evaluated

CMS (Ref. 116361 )

Not Evaluated

Threat to humans

  Harmless





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Fisheries: of no interest FAO - Publication: search | FishSource |

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AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes : genus , species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome , nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go , Search | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Preferred temperature (Ref. 123201 ): 20.2 - 29.1, mean 25.4 °C (based on 234 cells). Phylogenetic diversity index (Ref. 82804 ):  PD 50 = 0.5000   [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 ):  3.5   ±0.6 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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