Taxon name
Argyrops spinifer
(Forsskål, 1775)
Uploaded by
National Red List Database
Taxonomic information
Scientific name
Argyrops spinifer
(Forsskål, 1775)
Assessed taxon level
Species
Higher level taxonomic groupings
Vertebrates
Fishes
Species authority
(Forsskål, 1775)
Taxonomic notes and synonyms listed
Argyrops spinifer may represent three unique species in the Arabian Gulf (Y. Iwatsuki pers. comm. 2013). Iwatsuki and Heemstra (2018) recently described A. flavops from Mutrah, Oman and Karachi, Pakistan and A. caeruleops from the Gulf of Oman, southern Oman, Socotra and Pakistan. Further study of additional specimens is required to determine the extent of their distributions in the western Indian Ocean/Arabian Seas region.
Location and scope
Specific locality or subnational name or regional name
United Arab Emirates (the)
Scope (of the Assessment)
National
Countries included within the scope of the assessment
United Arab Emirates (the)
Does the assessment cover a marine EEZ area(s)?
Not_assigned
Conservation Status
Assessed as
Critically Endangered
Qualifying criteria (if given)
A2bd+4bd
Criteria system used
IUCN
(see Assessment details)
Assessment rationale/justification
This coastal species occurs throughout UAE waters. It is targeted by commercial fisheries in the UAE and surrounding countries of the Arabian Gulf and Sea of Oman and is considered overexploited in Abu Dhabi. Based on catch data, stock assessments and fish market observations, this species is inferred to have declined by at least 80% over the past generation length, or 14 years. Its population status in areas neighboring the UAE is not known, but it is heavily exploited elsewhere as well. With recent fisheries management measures implemented in Abu Dhabi, it is difficult to say whether fishing effort will continue to increase or decrease within the near future; however, effort in this fishery in surrounding Emirates where management measures are not stringent may increase or remain the same. Considering that other Emirates and surrounding countries that likely share this stock do not have management measures in place to reduce effort in the gargoor fishery, population declines are expected to continue. It is listed as Critically Endangered A2bd+A4bd. As this species may be confused with two other recently described species from the region (Argyrops flavops and A. caeruleops), further taxonomic work is recommended.
Assessment details
Assessors/contributors/reviewers listed
UAE National Red List Workshop
Criteria system used
IUCN
Reference for methods given
IUCN. 2012. IUCN Red List Categories and Criteria: Version 3.1, Second edition. IUCN, Gland, Switzerland and Cambridge, UK. iv + 32pp pp. And IUCN. 2012. Guidelines for Application of IUCN Red List Criteria at Regional and National Levels: Version 4.0. Gland, Switzerland and Cambridge, UK: IUCN. iii + 41pp.
Further information
Endemism (according to assessment)
Endemic to region
Not assigned
Taxon distribution as listed in assessment
This species occurs throughout UAE waters. Globally, it is widespread in the Indo-West Pacific (Bauchot and Smith 1984).
Is there a map available in assessment?
Yes
Habitat and systems
Ecological system type
Habitat
Habitat details as listed in assessment
This species inhabits a wide range of bottoms to 150 m depth, usually 5-100 m (Smith and Smith 1986, Sommer et al. 1996). Young fish occur in very shallow waters of sheltered bays (Sommer et al. 1996) and larger individuals occur in deeper water. It occurs in estuaries along the Iranian Sea of Oman coast (Kamrani et al. 2016). It feeds on benthic invertebrates, mainly mollusks (Fischer et al. 1990, Salini et al. 1994). The spawning season in the Arabian Sea occurs from September to January, with a peak around October-November. In the southern Arabian Gulf, spawning occurs from January to April (Grandcourt et al. 2004). In Qatari waters, spawning occurs from November to March, with a peak in December (Abdallah et al. 2012). There is some evidence of large aggregations forming during autumn in the Gulf of Aden (Mann and Fennessy 2000). Its maximum total length is 75 cm (S. Alam pers. comm. 2013). The fork length at first maturity in Oman is 28.6 and 26.4 cm for females and males, respectively (McIlwain et al. 2006). Age and length at first maturity off Abu Dhabi is estimated as 26.9 cm and 2.4 years for males and 26.7 cm and 2.4 years for females (Grandcourt et al. 2004). In the Arabian Sea off Oman, longevity was estimated as 25 years and size and age at maturity as 36.5 cm and 5 years for males and 37.2 cm and 5.6 years for females (Al Mamry et al. 2009). In Iran, the maximum recorded ages for females and males was 21 and 25 years, respectively (Ghanbarzadeh et al. 2017). When applying an age at first reproduction of 3 years and longevity of 25 years, its estimated generation length is 14 years based on the following equation recommended by the IUCN Red List methods: Age at first reproduction + (Age at last reproduction -“ age at first reproduction)/2.
Threats and conservation measures listed
Threats listed in assessment
Overfishing is a major threat to this species in the UAE (Grandcourt et al. 2014). Coastal development has been pervasive in the UAE and Arabian Gulf region, and this may impact the inshore habitats this species utilizes.
Publication
Ralph, G.M., Stump, E., Linardich, C., Bullock, R.W., Carpenter, K.E., Allen D.J., Hilton-Taylor, C., Al Mheiri, R., and Alshamsi, O. 2021. UAE National Red List of Marine Species: Reef-building corals, cartilaginous fishes and select bony fishes. 2021. Ministry of Climate Change and Environment, Dubai, United Arab Emirates.