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Profile updated on 15 March 2024

SUMMARY

SUMMARY

IDENTIFICATION

SCIENTIFIC NAME(s)

Thunnus obesus

SPECIES NAME(s)

Bigeye tuna

Bigeye tuna (Thunnus obesus) is a highly migratory species that inhabits the epipelagic zone down to around 300 m of tropical and subtropical marine waters distributed throughout the three major oceans where it forms large schools, and often juveniles are associated with floating objects (IOTC 2017). The evidence of rapid and large-scale movements of juvenile bigeye tuna in the Indian Ocean reported by the Regional Tuna Tagging Project-Indian Ocean (RTTP-IO) supports the assumption of a single stock of bigeye tuna population within the Indian Ocean (Murua et al. 2015)(IOTC 2017)(Artetxe-Arrate et al. 2021).


ANALYSIS

Strengths
  • The stock assessment is carried out regularly using a range of assessment methods.  

SCORES

Management Quality:

Management Strategy:

< 6 to ≥ 6

Managers Compliance:

< 6 to ≥ 6

Fishers Compliance:

< 6 to ≥ 6