FishBase | Search | All Living Things

Ogilbia boydwalkeri P. R. M°ller, W. Schwarzhans and J. G. Nielsen, 2005
Life   Vertebrata   Fish   Bythitidae   Ogilbia

Ogilbia boydwalkeri
© Copyright Ross Robertson, 2006 · 12
Ogilbia boydwalkeri

Click on map for details about points.

IDnature guide


    We parsed the following live from the Web into this page. Such content is managed by its original site and not cached on Discover Life. Please send feedback and corrections directly to the source. See original regarding copyrights and terms of use.
  • FishBase

80x5 - 240x3 - 240x4 - 320x1 - 320x2 - 320x3 - 640x1 - 640x2
Set display option above.
Click on image to enlarge.
Ogilbia boydwalkeri
© Copyright Photographer/SFTEP, 2002 · 0
Ogilbia boydwalkeri

Main identification features
  • head deep
  • adult - preopercular spine 2-3 points
  • cheek 8-10 vertical scale rows
Walkerĺs brotula

Body elongate and somewhat compressed; head relatively narrow (usually <10% of SL) and deep (height usually >16% of SL); snout rounded; a sharp spine on opercle that has 2-3 tips in adults; eye relatively large (1.9-2.8% of SL); 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 64-72; anal rays 49-54; origin of anal fin under dorsal rays 20-24; pectoral rays 18-20; tail fin rays 16; body covered with tiny overlapping scales, about 110 in midlateral series; patch of cheek scales with 8-10 vertical rows of scales; belly with scales; penis moderately long, curved, tapering, thin; 2 pairs of long pseudoclaspers associated with penis, outer pair broad, wing shaped, with pointed tip, inner pair with 3 branches at tip, front branch long and curved, rear branch short, a thick fleshy lobe in between.

Probably brown.

Size: reaches 7.1 cm.

Inhabits shallow reefs.

Depth: 1-8 m.

Southern Mexico to El Salvador.

Cites: Not listed.
Climate Zone: Northern Tropical (Mexican Province to Nicaragua + Revillagigedos).
Depth Range Max: 8 m.
Depth Range Min: 1 m.
Diet: mobile benthic crustacea (shrimps/crabs); bony fishes.
Eastern Pacific Range: Northern limit=19; Southern limit=13; Western limit=-105; Eastern limit=-89; Latitudinal range=6; Longitudinal range=16.
Egg Type: Live birth; Pelagic larva.
Feeding Group: Carnivore.
FishBase Habitat: Demersal.
Global Endemism: East Pacific endemic; Tropical Eastern Pacific (TEP) endemic; All species.
Habitat: Rocks; Reef associated (reef + edges-water column & soft bottom); Reef only; Reef (rock &/or coral).
Inshore Offshore: Inshore; Inshore Only.
IUCN Red List: Not evaluated / Listed.
Length Max: 7.1 cm.
Regional Endemism: TEP endemic; Continental TEP endemic; Mexican province endemic; Continent only; Continent; All species.
Residency: Resident.
Salinity: Marine; Marine Only.
Water Column Position: Bottom; Bottom only;

Links to other sites

  • M°ller, P.R., Schwarzhans, W., Nielsen, J.G., 2005., Review of the American Dinematichthyini (Teleostei: Bythitidae). Part II. Ogilbia., Aqua, 10:133-207.


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

Supported by
go to Discover Life's Facebook group

Following modified from FishBase
   Top | See original ---> --->

Common name (e.g. trout)

Genus + Species (e.g. Gadus morhua)

Ogilbia boydwalkeri M├Şller , Schwarzhans & Nielsen , 2005

Professor brotula Add your observation in Fish Watcher
Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Ogilbia boydwalkeri   AquaMaps   Data sources: GBIF OBIS
Upload your photos  and  videos
Pictures | Google image Image of Ogilbia boydwalkeri (Professor brotula) Ogilbia boydwalkeri
Picture by M├Şller, P.R.

Classification / Names Common names | Synonyms | Catalog of Fishes ( gen. , sp. ) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Ophidiiformes (Cusk eels) > Bythitidae (Viviparous brotulas) > Brosmophycinae
Etymology: Ogilbia: Taken from Ogilby, 1887-1915, icthiologist and zoologist (Ref. 45335 ) ;   boydwalkeri: Named for Dr. Boyd Walker.   More on authors: M├Şller , Schwarzhans & Nielsen .

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

Marine; demersal; depth range 0 - 8 m (Ref. 57883 ).   Tropical

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

Eastern Pacific: Mexico and El Salvador.

Size / Weight / Age

Maturity: L m   ?   range ? - ? cm
Max length : 6.1 cm SL male/unsexed; (Ref. 57883 )

Short description Morphology | Morphometrics

Dorsal soft rays (total): 64-72; Anal soft rays : 49 - 54; Vertebrae : 39 - 41. The species is distinguished by the following characters: vertebrae 11 + 28-30 = 39-41, dorsal fin rays 64-72, anal fin rays 49-54; outer pseudoclasper is broad, wingshaped with single curved supporter; inner pseudoclasper with three lobes, consisting of a branched supporter, anterior branch curved and long, posterior branch short, and a thick fleshy lobe in between; penis with no abrupt change in thickness; opercular spine with single, sharp tip in small specimens and bi- or tri-furcated in specimens > 45 mm SL; scale patch on cheeks is broad, with 8-10 vertical scale rows; otolith length: height ratio 2.2 (Ref. 57883 ).

Biology     Glossary (e.g. epibenthic)

Apparently lives on rocky bottoms (Ref. 57883 ).

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

Main reference Upload your references | References | Coordinator | Collaborators

M├Şller, 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. 120744 )

  Least Concern (LC)  ; Date assessed: 29 April 2008

CITES (Ref. 115941 )

Not Evaluated

CMS (Ref. 116361 )

Not Evaluated

Threat to humans


Human uses

FAO(Publication : search ) | FishSource |

More information

FAO areas
Food items
Food consumption
Common names
Spawning aggregation
Egg development
Larval dynamics
Aquaculture profile
Allele frequencies
Mass conversion
Stamps, Coins Misc.
Swim. type
Gill area


E-book | Field guide | Length-frequency wizard | Life-history tool | Point map | Classification Tree | Catch-MSY |

Special reports

Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

Download XML

Summary page | Point data | Common names | Photos

Internet sources

Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes ( gen. , sp. ) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank( genome , nucleotide ) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Tree of Life | Wikipedia( Go , Search ) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on models

Preferred temperature (Ref. 115969 ): 24.3 - 29.1, mean 26.9 (based on 190 cells). Phylogenetic diversity index (Ref. 82805 ):  PD 50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high]. Bayesian length-weight: a=0.00447 (0.00174 - 0.01147), b=3.10 (2.87 - 3.33), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245 ). Trophic Level (Ref. 69278 ):  3.2   ±0.5 se; Based on size and trophs of closest relatives Resilience (Ref. 69278 ):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.). Vulnerability (Ref. 59153 ):  Low vulnerability (12 of 100) .

Entered by Capuli, Estelita Emily Fish Forum
Comments & Corrections
Sign our Guest Book Back to Search Random Species Back to Top
Accessed through: Not available FishBase mirror site : Stockholm, Sweden Page last modified by : mrius-barile - 20 July 2016
Total processing time for the page : 0.5525 seconds

Updated: 2020-02-18 07:08:18 gmt
FishBase | Search | All Living Things | Top
© Designed by The Polistes Corporation