Facts about Pelagic Brotula (Thalassobathia pelagica)

Uncommon species, living in close association with the large jellyfish, Stygiomedusa sp. (Ref. 34024).

Nielsen, J.G., D.M. Cohen, D.F. Markle and C.R. Robins 1999 FAO Species Catalogue. Vol. 18. 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=17075

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Distribution

Range Description

Thalassobathia pelagica is known in the north Atlantic from Ireland, Greenland, Iceland, and Georges Bank in the Gulf of Maine. This species has also been captured in the southeast Atlantic in the Gulf of Guinea.

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Source: IUCN

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Distribution

Eastern Atlantic: two specimens between Ireland and Iceland and one from the Gulf of Guinea; reported from Greenland and Iceland. Northwest Atlantic: Georges Bank

North-West Atlantic Ocean species (NWARMS) http://www.marinespecies.org/aphia.php?p=sourcedetails&id=2901

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Distribution

European waters (ERMS scope), North West Atlantic

North-West Atlantic Ocean species (NWARMS) http://www.marinespecies.org/aphia.php?p=sourcedetails&id=2901
van der Land, J.; Costello, M.J.; Zavodnik, D.; Santos, R.S.; Porteiro, F.M.; Bailly, N.; Eschmeyer, W.N.; Froese, R. (2001). Pisces, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 357-374 http://www.marbef.org/data/aphia.php?p=sourcedetails&id=1411

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Eastern Atlantic: two specimens between Ireland and Iceland (Ref. 4758) and one from the Gulf of Guinea; reported from Greenland (Ref. 9925) and Iceland (Ref. 12462). Northwest Atlantic: Georges Bank. Identification of specimen reported from the Bering Sea uncertain (Ref. 34024, 45907).

Nielsen, J.G. 1990 Bythitidae. p. 574-575. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 2. (Ref. 6526) http://www.fishbase.org/references/FBRefSummary.php?id=6526&speccode=8995

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Size

Maximum size: 221 mm ---

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Max. size

22.1 cm SL (male/unsexed; (Ref. 6526))

Nielsen, J.G. 1990 Bythitidae. p. 574-575. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 2. (Ref. 6526) http://www.fishbase.org/references/FBRefSummary.php?id=6526&speccode=8995

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Habitat

Habitat and Ecology

Habitat and Ecology

Thalassobathias pelagica is bathypelagic species found at a depth range of 500–1,000 m. This species is often found living with sea nettles (jellyfish) of the genus Deepstaria, and isopods of the genus Anuropus (Robison 2004). Thalassobathias pelagica is also reported to have a symbiotic relationship with the Scyphomedusa (jellyfish), Stygiomedusa gigantean (Drazen and Robison 2004). Species of the family Bythitidae are viviparous (Nielsen 1999).

Systems

Marine

Source: IUCN

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Habitat

nektonic

North-West Atlantic Ocean species (NWARMS) http://www.marinespecies.org/aphia.php?p=sourcedetails&id=2901

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Habitat

Uncommon species, living in close association with the large jellyfish, Stygiomedusa sp.

North-West Atlantic Ocean species (NWARMS) http://www.marinespecies.org/aphia.php?p=sourcedetails&id=2901

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Depth: 0 - 700m.
Recorded at 700 meters.

Habitat: bathypelagic. Caught at about 700 m depth.

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Environment

bathypelagic; marine; depth range 500 - 1000 m (Ref. 50610)

Russian Academy of Sciences 2000 Catalog of vertebrates of Kamchatka and adjacent waters. 166 p. (Ref. 50610) http://www.fishbase.org/references/FBRefSummary.php?id=50610&speccode=2592

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Conservation Status

IUCN Red List Assessment

Red List Category

LC

Least Concern

Red List Criteria

Version

3.1

Year Assessed

2010

Assessor/s

Nielsen, J.G.

Reviewer/s

Collen, B., Richman, N., Beresford, A., Chenery, A. & Ram, M.

Contributor/s

De Silva, R., Milligan, H., Lutz, M., Batchelor, A., Jopling, B., Kemp, K., Lewis, S., Lintott, P., Sears, J., Wilson, P., Smith, J. and Livingston, F.

Justification

Thalassobathia pelagica has been assessed as Least Concern. This is a very broadly distributed species, and its deep-water nature is likely to protect it from many human-induced and natural threats. Although there is little information available on population size or trends for this species, it is unlikely to be experiencing population declines at present.

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Trends

Population

Population

This species is reported to be uncommon (Nielsen et al. 1999).

Population Trend

Unknown

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Threats

Major Threats

Due to the deep-water nature of Thalassobathia pelagica, it is unlikely that it is being impacted by any major threat processes at present.

Source: IUCN

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Least Concern (LC)

IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006. http://www.fishbase.org/references/FBRefSummary.php?id=57073

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Management

Conservation Actions

Conservation Actions

There are no species-specific conservation measures in place for Thalassobathia pelagica. Further research is needed on this distribution of this species, to establish the full range of T. pelagica in the southeast Atlantic.

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Benefits

Importance

fisheries: of no interest

Nielsen, J.G., D.M. Cohen, D.F. Markle and C.R. Robins 1999 FAO Species Catalogue. Vol. 18. 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=17075

Source: FishBase

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