Ogilbia ventralis — Details

Gulf Cuskeel learn more about names for this taxon

Overview

Comprehensive Description

Biology

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Common species (Ref. 34024). Found in rocky crevices (Ref. 11482).
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Description

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Common names: brotula (English), brótula (Espanol)
 
Ogilbia ventralis (Gill, 1863)

Red-brown brotula


Body elongate and somewhat compressed; snout rounded;  head relatively narrow (usually < 10% of SL) and shallow (height usually < 16% of SL), narrow between eyes; top jaw bone expanded vertically at rear; rear 3 pores on bottom jaw small; a sharp spine on opercle that always has 1 tip; eye relatively large (1.9-2.8% of SL); preopercle with 3 pores at lower rear corner; upper part with a pore; gill rakers 13-17, 2-4 long rakers in angle of arch; origin of dorsal fin at level of middle of pectoral fins; pelvic fins inserted below rear part of head;  dorsal rays 78-91; anal rays 56-65; origin of anal under dorsal rays 20-26; pectoral rays 19-21; tail fin rays 15-16; lateral line indistinct, continuous, complete; body covered with tiny overlapping scales, about 110 in midlateral series; patch of cheek scales with 7-9 vertical rows of scales; belly with scales; penis moderately long, curved, tapering, thin; 2 pairs of long pseudoclaspers associated with penis, outer pair broad, ezpanded at tips, inner pair with 3 slender branches at tip, center branch short.

Reddish brown, white on lower part of head and belly; dorsal and anal fin bases lighter.

Size: reaches 9.2 cm.

Inhabits shallow reefs.

Depth: 1-10 m.



Southern Baja and the SW and central E Gulf of California.

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Distribution

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Central eastern Pacific: Mexico.
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Eastern Central Pacific: around the southern tip of the Gulf of California.
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Range Description

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This tropical eastern Pacific species is found from southern Baja California and the southwest and central east of the Gulf of California.
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Depth

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Depth Range (m): 1 (S) - 10 (S)
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Zoogeography

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See Map (including site records) of Distribution in the Tropical Eastern Pacific


 
Global Endemism: All species, East Pacific endemic, Tropical Eastern Pacific (TEP) endemic

Regional Endemism: All species, TEP endemic, Continental TEP endemic, Cortez province endemic, Continent, Continent only

Residency: Resident

Climate Zone: Northern Subtropical (Cortez Province + Sinaloan Gap)

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Physical Description

Morphology

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Dorsal soft rays (total): 78 - 91; Analsoft rays: 56 - 65; Vertebrae: 42 - 45
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Size

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Length max (cm): 9.2 (S)
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Size

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Maximum size: 70 mm NG
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Max. size

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7.8 cm SL (male/unsexed; (Ref. 57883))
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Diagnostic Description

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The species is characterized by the following: Vertebrae 11-13 + 30-33 = 42-45, dorsal fin rays 78-91, anal fin rays 56-65, the outer pseudoclasper broad, distally expanded; inner pseudoclasper branched into three slender branches, two outer v-shaped, medial one short and stout, penis with abrupt change from thick base to thin tip; opercular spine with single, sharp tip; scales on cheek small, in vertical 7-9 rows (Ref. 57883).
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Type Information

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Lectotype; Syntype for Brosmophycis ventralis Gill
Catalog Number: USNM 36917
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): J. Xantus
Locality: C. St. Lucas, Baja California Sur, Mexico, Pacific
  • Lectotype: Moller, P. R., et al. 2005. Aqua: Journal of Ichthyology and Aquatic Biology. 10 (4): 171.; Gill, T. N. 1863. Proceedings of the Academy of Natural Sciences of Philadelphia. 15: 253.; Syntype: Moller, P. R., et al. 2005. Aqua: Journal of Ichthyology and Aquatic Biology. 10 (4): 171.; Gill, T. N. 1863. Proceedings of the Academy of Natural Sciences of Philadelphia. 15: 253.
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Paralectotype; Syntype for Brosmophycis ventralis Gill
Catalog Number: USNM 375533
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): J. Xantus
Locality: C. St. Lucas, Baja California Sur, Mexico, Pacific
  • Paralectotype: Moller, P. R., et al. 2005. Aqua: Journal of Ichthyology and Aquatic Biology. 10 (4): 171.; Gill, T. N. 1863. Proceedings of the Academy of Natural Sciences of Philadelphia. 15: 253.; Syntype: Moller, P. R., et al. 2005. Aqua: Journal of Ichthyology and Aquatic Biology. 10 (4): 171.; Gill, T. N. 1863. Proceedings of the Academy of Natural Sciences of Philadelphia. 15: 253.
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Ecology

Habitat

Environment

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reef-associated; marine; depth range 0 - 10 m (Ref. 57883)
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Habitat and Ecology

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Habitat and Ecology
This species inhabits shallow reefs and tide pools, feeds on small fishes and benthic invertebrates, and is viviparous. This species is found from 0 to 10m.

Systems
  • Marine
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Depth range based on 6 specimens in 1 taxon.

Environmental ranges
  Depth range (m): 0.4 - 6

Graphical representation

Depth range (m): 0.4 - 6
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
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Salinity: Marine, Marine Only

Inshore/Offshore: Inshore, Inshore Only

Water Column Position: Bottom, Bottom only

Habitat: Reef (rock &/or coral), Reef only, Rocks, Reef associated (reef + edges-water column & soft bottom)

FishBase Habitat: Reef Associated
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Trophic Strategy

Feeding

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Feeding Group: Carnivore

Diet: mobile benthic crustacea (shrimps/crabs), bony fishes
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Life History and Behavior

Reproduction

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Egg Type: Live birth, Pelagic larva
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Conservation

Conservation Status

IUCN Red List Assessment

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Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2010

Assessor/s
Nielsen, J.G., Munroe, T., Tyler, J., Robertson, R.

Reviewer/s
Carpenter, K., Polidoro, B., Livingstone, S. (Global Marine Species Assessment Team)

Justification
This species has no major threats and is found in Marine Protected Areas within the Gulf of California. Therefore, this species is listed as Least Concern.
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IUCN Red List: Not evaluated / Listed

CITES: Not listed
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Population

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Population
This is a relatively common species. No population data is available for this species.

Population Trend
Unknown
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Threats

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Least Concern (LC)
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Major Threats
There are no major threats for this species.
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Management

Conservation Actions

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Conservation Actions
There are no species specific conservation measures. However, this species' distribution includes a number of Marine Protected Areas in Mexico.
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Relevance to Humans and Ecosystems

Benefits

Importance

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fisheries: of no interest
  • Nielsen, J.G., D.M. Cohen, D.F. Markle and C.R. Robins 1999 Ophidiiform fishes of the world (Order Ophidiiformes). An annotated and illustrated catalogue of pearlfishes, cusk-eels, brotulas and other ophidiiform fishes known to date. FAO Fish. Synop. 125(18):178p. Rome: FAO. (Ref. 34024)   http://www.fishbase.org/references/FBRefSummary.php?id=34024&speccode=65 External link.
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