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Overview

Comprehensive Description

Biology

Inhabits shallow rocky areas, often in pools of the intertidal zone (Ref. 2798). Occurs mostly in coastal areas. Also found in estuaries, tidal zones and often ascending into freshwater streams; smaller species live between branches of corals where they exploit several crustacean groups. Feeds on crustaceans, fish and algae (Ref. 92840). Sometimes seen as fresh catches at markets (Ref. 12693).
  • Hoese, D.F. 1986 Gobiidae. p. 774-807. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 2798)
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Brief

"Red List Category & Criteria: Least Concern ver 3.1 Year Assessed: 2010 Conservation Actions: Currently there is no specific action plan directed towards Ambassis dussumieri. Research on the population status, ecology and threats to the species is essential."
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Miscellaneous Details

Taxonomic Notes: Bathygobius fuscus was originally described as Gobius fuscus by Rüppell (1830) from Red Sea.
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Distribution

Range Description

Bathygobius fuscus is a widely distributed species in tropical seas, brackish water and freshwater. It is found in the Red Sea, Indo-West Pacific: East Africa, Madagascar and Mascarenes east to Maldives, all costal states of India, Andaman and Nicobar Islands, Sri Lanka, Wake Atoll, Marquesas Islands and Gambier Islands, north to South Korea and southern Japan, south to Western Australia, Queensland (Australia), New Caledonia, Norfolk Island and Tonga (Tilak 1972, Jones et al. 1981, Talwar and Jhingran 1991, Rao et al. 2000, Eschmeyer and Fricke 2011).
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"Range Description: Bathygobius fuscus is a widely distributed species in tropical seas, brackish water and freshwater. It is found in the Red Sea, Indo-West Pacific: East Africa, Madagascar and Mascarenes east to Maldives, all costal states of India, Andaman and Nicobar Islands, Sri Lanka, Wake Atoll, Marquesas Islands and Gambier Islands, north to South Korea and southern Japan, south to Western Australia, Queensland (Australia), New Caledonia, Norfolk Island and Tonga (Tilak 1972, Jones et al. 1981, Talwar and Jhingran 1991, Rao et al. 2000, Eschmeyer and Fricke 2011). Countries - Native: Australia; Bangladesh; China; Fiji; Hong Kong; India (Andaman Is., Andhra Pradesh, Goa, Gujarat, Karnataka, Kerala, Laccadive Is., Maharashtra, Nicobar Is., Orissa, Pondicherry, Tamil Nadu, West Bengal); Indonesia; Japan; Korea, Republic of; Myanmar; Papua New Guinea; Sri Lanka; Taiwan, Province of China; Thailand; Viet Nam"
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Indo-Pacific: Red Sea south to Bazaruto, Mozambique (Ref. 2798) and east to the Line and Tuamoto islands, north to South Korea and southern Japan, south to the southern Great Barrier Reef. Does not occur in the Hawaiian Islands (Ref. 7490).
  • Myers, R.F. 1991 Micronesian reef fishes. Second Ed. Coral Graphics, Barrigada, Guam. 298 p. (Ref. 1602)
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Red Sea, Indo-West Pacific: East Africa, Madagascar and Mascarenes east to Wake Atoll, Marquesas Islands and Gambier Islands, north to South Korea and southern Japan, south to Western Australia, Queensland (Australia), New Caledonia, Norfolk Island and To
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Physical Description

Morphology

Dorsal spines (total): 7; Dorsal soft rays (total): 9; Analspines: 1; Analsoft rays: 8
  • Myers, R.F. 1991 Micronesian reef fishes. Second Ed. Coral Graphics, Barrigada, Guam. 298 p. (Ref. 1602)
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Size

Maximum size: 120 mm TL
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Max. size

12.0 cm TL (male/unsexed; (Ref. 4343))
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Diagnostic Description

Characterized further by pale yellowish brown color with large, irregular dark brown blotches on body; small, pale blue spots (one per scale) in longitudinal rows on body; dorsal and caudal fins with small blue spots, outer edge of dorsal fins broadly yellow; upper three pectoral rays partly free of membrane; rounded caudal fin; longitudinal scale series 29-36; predorsal scales 10-19, reaching from above middle of preopercle nearly to interorbital space; cheek and opercle without scales; ctenoid body scales, becoming cycloid on abdomen, breast and nape; depressed head, width greater than depth; depth of body 4.4-5.0 in SL (Ref. 90102).
  • Myers, R.F. 1991 Micronesian reef fishes. Second Ed. Coral Graphics, Barrigada, Guam. 298 p. (Ref. 1602)
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Description

Inhabits shallow rocky areas, often in pools of the intertidal zone.
  • Anon. (1996). FishBase 96 [CD-ROM]. ICLARM: Los Baños, Philippines. 1 cd-rom pp.
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Type Information

Cotype for Gobius poecilichthys
Catalog Number: USNM 49919
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Preparation: Illustration
Collector(s): D. Jordan & J. Snyder
Year Collected: 1900
Locality: Misaki, Sagami, Honshu, Japan, Pacific
  • Cotype:
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This is primarily a marine species occasionally entering freshwaters. It is found mainly in the creeks (Rao et al. 2000) and it prefers habitats with sand and rubble, soft coral and open reefs (Depczynski and Bellwood 2004). It is a detritus feeder (Depczynski and Bellwood 2003).

Systems
  • Freshwater
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Environment

reef-associated; amphidromous (Ref. 51243); freshwater; brackish; marine
  • Riede, K. 2004 Global register of migratory species - from global to regional scales. Final Report of the R&D-Projekt 808 05 081. Federal Agency for Nature Conservation, Bonn, Germany. 329 p. (Ref. 51243)
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Depth range based on 67 specimens in 1 taxon.
Water temperature and chemistry ranges based on 38 samples.

Environmental ranges
  Depth range (m): 0.08 - 7.625
  Temperature range (°C): 24.610 - 29.336
  Nitrate (umol/L): 0.009 - 1.925
  Salinity (PPS): 33.821 - 36.148
  Oxygen (ml/l): 4.450 - 4.883
  Phosphate (umol/l): 0.092 - 0.445
  Silicate (umol/l): 1.005 - 4.102

Graphical representation

Depth range (m): 0.08 - 7.625

Temperature range (°C): 24.610 - 29.336

Nitrate (umol/L): 0.009 - 1.925

Salinity (PPS): 33.821 - 36.148

Oxygen (ml/l): 4.450 - 4.883

Phosphate (umol/l): 0.092 - 0.445

Silicate (umol/l): 1.005 - 4.102
 
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Migration

Amphidromous. Refers to fishes that regularly migrate between freshwater and the sea (in both directions), but not for the purpose of breeding, as in anadromous and catadromous species. Sub-division of diadromous. Migrations should be cyclical and predictable and cover more than 100 km.Characteristic elements in amphidromy are: reproduction in fresh water, passage to sea by newly hatched larvae, a period of feeding and growing at sea usually a few months long, return to fresh water of well-grown juveniles, a further period of feeding and growing in fresh water, followed by reproduction there (Ref. 82692).
  • Riede, K. 2004 Global register of migratory species - from global to regional scales. Final Report of the R&D-Projekt 808 05 081. Federal Agency for Nature Conservation, Bonn, Germany. 329 p. (Ref. 51243)
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Life History and Behavior

Life Cycle

Benthic spawner.
  • Fishelson, L. 1989 Bisexuality and pedogenesis in gobies (Gobiidae: Teleostei) and other fish, or, why so many little fish in tropical seas?. Senckenbergiana Marit. 147-169. (Ref. 31409)
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Bathygobius fuscus

The following is a representative barcode sequence, the centroid of all available sequences for this species.


No available public DNA sequences.

Download FASTA File
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Statistics of barcoding coverage: Bathygobius fuscus

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 4
Species With Barcodes: 1
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2013

Assessor/s
Dahanukar, N.

Reviewer/s
Rema Devi, K.R., Gopalakrishnan, A., Arunachalam, M., Shrikant, J., Johnson, J.A., Rahul, K. & Molur, S.

Contributor/s
Molur, S.

Justification
Bathygobius fuscus is a widely distributed species with no known major threat. Hence it is assessed as Least Concern.
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"Red List Category & Criteria: Least Concern ver 3.1 Year Assessed: 2010 Conservation Actions: Currently there is no specific action plan directed towards Ambassis dussumieri. Research on the population status, ecology and threats to the species is essential."
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Population

Population
Bathygobius fuscus is relatively common. In Australia the fish contributed to 1.63% of the total catch (Depczynski and Bellwood 2004).

Population Trend
Stable
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Threats

Major Threats
There are no known major threats to the species.
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Least Concern (LC)
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
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Management

Conservation Actions

Conservation Actions
No conservation action plan is in place directed towards Bathygobius fuscus. It is not known if the species is present in any protected areas.
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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries: minor commercial; price category: very high; price reliability: very questionable: based on ex-vessel price for species in this family
  • Rainboth, W.J. 1996 Fishes of the Cambodian Mekong. FAO Species Identification Field Guide for Fishery Purposes. FAO, Rome, 265 p. (Ref. 12693)
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