Last updated on 7 April 2016

SUMMARY

SUMMARY

IDENTIFICATION

SCIENTIFIC NAME(s)

Coryphaena hippurus

SPECIES NAME(s)

Common dolphinfish, Mahi-mahi

The stock structure of the species is not truly known at a global scale. Díaz-Jaimes et al. (2010) studied the inter-oceanic divergence of the Atlantic, Indian, Pacific and Mediterranean populations but the genetic differentiation is not conclusive. Here, the separation of the Eastern Pacific and the Western Central Pacific stocks is based in the genetic heterogeneity found in the Pacific Ocean by Rocha-Olivares et al (2006).

RELATED LINKS:


ANALYSIS

Strengths

Stock is mostly an incidentally caught species and not usually the primary target of exploitation
Because of the stocks life-history, Mahi-Mahi is not susceptible to over-exploitation
CPUE indices indicate a stable relative biomass in US (Hawaiian) waters
Weaknesses
Data on stock status is not available.
Reference points are unavailable.
Data on landings from the recreational sector are highly uncertain.
There is currently no management measures in place this stock
Options
Suggest data be collected to support a quantified stock assessment with reference points and projections
Encourage precautionary quota setting under US management law (M&S Act).

Weaknesses

Stock is mostly an incidentally caught species and not usually the primary target of exploitation
Because of the stocks life-history, Mahi-Mahi is not susceptible to over-exploitation
CPUE indices indicate a stable relative biomass in US (Hawaiian) waters
Weaknesses
Data on stock status is not available.
Reference points are unavailable.
Data on landings from the recreational sector are highly uncertain.
There is currently no management measures in place this stock
Options
Suggest data be collected to support a quantified stock assessment with reference points and projections
Encourage precautionary quota setting under US management law (M&S Act).

Options

Stock is mostly an incidentally caught species and not usually the primary target of exploitation
Because of the stocks life-history, Mahi-Mahi is not susceptible to over-exploitation
CPUE indices indicate a stable relative biomass in US (Hawaiian) waters
Weaknesses
Data on stock status is not available.
Reference points are unavailable.
Data on landings from the recreational sector are highly uncertain.
There is currently no management measures in place this stock
Options
Suggest data be collected to support a quantified stock assessment with reference points and projections
Encourage precautionary quota setting under US management law (M&S Act).

FISHSOURCE SCORES

Management Quality:

Management Strategy:

< 6

Managers Compliance:

≥ 6

Fishers Compliance:

< 6

Stock Health:

Current
Health:

NOT YET SCORED

Future Health:

NOT YET SCORED


RECOMMENDATIONS

CATCHERS & REGULATORS

1. Review the FishSource profile and publish or share online relevant missing information in your possession or those accessible to you.
2. Encourage scientists to share their studies/publications with FishSource by commenting on the profile and uploading a hyperlink to the document.
3. Work with scientists on the collection of data and make them accessible online.
4. Encourage the institutionalization of data collection and publication.

RETAILERS & SUPPLY CHAIN

1. Advise your suppliers that currently the FishSource profile reflects that there is not enough information publicly available on this fishery and you are unable to make an accurate determination of the sustainability status. Request that they advise the relevant authorities of the situation and that efforts need to be made to collect and publish data and disclose data sources to FishSource to better inform buying decisions.


FIPS

  • Taiwan Hsin-Kang mahi-mahi - longline:

    Stage 4, Progress Rating B

CERTIFICATIONS

No related MSC fisheries

Fisheries

Within FishSource, the term "fishery" is used to indicate each unique combination of a flag country with a fishing gear, operating within a particular management unit, upon a resource. That resource may have a known biological stock structure and/or may be assessed at another level for practical or jurisdictional reasons. A fishery is the finest scale of resolution captured in FishSource profiles, as it is generally the scale at which sustainability can most fairly and practically be evaluated.

ASSESSMENT UNIT MANAGEMENT UNIT FLAG COUNTRY FISHING GEAR
Western and Central Pacific Ocean Australia Australia Bottom-set longlines
Indonesia Indonesia Drifting longlines
Handlines hand operated
Taiwan Taiwan, Province of China Drifting longlines
Trolling lines
United States United States Longlines
Vietnam Viet Nam Drifting longlines
Handlines hand operated

Analysis

OVERVIEW

Last updated on 3 June 2013

Strengths

Stock is mostly an incidentally caught species and not usually the primary target of exploitation
Because of the stocks life-history, Mahi-Mahi is not susceptible to over-exploitation
CPUE indices indicate a stable relative biomass in US (Hawaiian) waters
Weaknesses
Data on stock status is not available.
Reference points are unavailable.
Data on landings from the recreational sector are highly uncertain.
There is currently no management measures in place this stock
Options
Suggest data be collected to support a quantified stock assessment with reference points and projections
Encourage precautionary quota setting under US management law (M&S Act).

Weaknesses

Stock is mostly an incidentally caught species and not usually the primary target of exploitation
Because of the stocks life-history, Mahi-Mahi is not susceptible to over-exploitation
CPUE indices indicate a stable relative biomass in US (Hawaiian) waters
Weaknesses
Data on stock status is not available.
Reference points are unavailable.
Data on landings from the recreational sector are highly uncertain.
There is currently no management measures in place this stock
Options
Suggest data be collected to support a quantified stock assessment with reference points and projections
Encourage precautionary quota setting under US management law (M&S Act).

Options

Stock is mostly an incidentally caught species and not usually the primary target of exploitation
Because of the stocks life-history, Mahi-Mahi is not susceptible to over-exploitation
CPUE indices indicate a stable relative biomass in US (Hawaiian) waters
Weaknesses
Data on stock status is not available.
Reference points are unavailable.
Data on landings from the recreational sector are highly uncertain.
There is currently no management measures in place this stock
Options
Suggest data be collected to support a quantified stock assessment with reference points and projections
Encourage precautionary quota setting under US management law (M&S Act).

RECOMMENDATIONS

Last updated on 28 June 2016

Improvement Recommendations to Catchers & Regulators

1. Review the FishSource profile and publish or share online relevant missing information in your possession or those accessible to you.
2. Encourage scientists to share their studies/publications with FishSource by commenting on the profile and uploading a hyperlink to the document.
3. Work with scientists on the collection of data and make them accessible online.
4. Encourage the institutionalization of data collection and publication.

Recommendations to Retailers & Supply Chain

1. Advise your suppliers that currently the FishSource profile reflects that there is not enough information publicly available on this fishery and you are unable to make an accurate determination of the sustainability status. Request that they advise the relevant authorities of the situation and that efforts need to be made to collect and publish data and disclose data sources to FishSource to better inform buying decisions.

1.STOCK STATUS

STOCK ASSESSMENT

Last updated on 3 June 2013

There is not yet a systematic stock assessment for these fisheries. Efforts are being made to coordinate stock assessments. However life history information suggest this is a fast growing species and not susceptible to over-exploitation.

SCIENTIFIC ADVICE

Last updated on 7 August 2012

There are no reliable stock assessments for this stock throughout its range. A CPUE indicates not depletion of the resource at this time.

Reference Points

Last updated on 07 Aug 2012

There are no reliable stock assessments for this stock throughout its range in the Pacific Ocean hence no reference points are available for evaluation.

CURRENT STATUS

Last updated on 3 June 2013

The status is highly uncertain. life-history suggest this stock is not susceptible to over-exploitation.

Trends

Last updated on 03 Jun 2013

Recent trends in CPUE are stable suggesting the stock is not undergoing over-exploitation.However these are only relative measurements and a complete stock status or evaluation is not available at this time.

2.MANAGEMENT QUALITY

MANAGEMENT

Last updated on 15 July 2011

Measures are not in place at this time.

Recovery Plans

Last updated on 15 Jul 2011

The eventual implementation of a recovery plan can only take place once the status of the stock is understood.

3.ENVIRONMENT AND BIODIVERSITY

BYCATCH
ETP Species

Last updated on 15 July 2011

Turtles and some impact on seabirds are known as the bycatch of this fishery. New modifications in the gears could avoid entanglement of turtles, which has been estimated as the mayor cause of by catch.

Other Species

Last updated on 15 July 2011

Sharks have been stated as a bycatch in this fishery by environmental organizations, but indeed the used line, with no steel at all, allows the sharks to escape, except some small animals without commercial interest, because of what are many times devolved alive to the sea.

HABITAT

Last updated on 15 July 2011

Pelagic gear used to target dolphinfish does not come in contact with sea floor and has nominal effects on coastal and marine habitats.

Marine Reserves

Last updated on 15 Jul 2011

The oceanic character of this species doesn´t allow any coping with marine reserves.

FishSource Scores

MANAGEMENT QUALITY

As calculated for 2015 data.

The score is < 6.

The management strategy is assessed to not be precautionary because the regional fisheries management organization has not adopted a total allowable catch or equivalent limit reference point.

As calculated for 2015 data.

The score is ≥ 6.

There is no set TAC for this fishery; however, no scientific advice suggesting a TAC is needed has been provided.

As calculated for 2015 data.

The score is < 6.

A lack of data (i.e. catch and effort) has prohibited a full stock assessment of this species.

STOCK HEALTH:

No data available for biomass
No data available for biomass
No data available for catch and tac
No data available for catch and tac
No data available for fishing mortality
No data available for fishing mortality
No data available for recruitment
No data available for recruitment
To see data for management quality, please view this site on a desktop.
No data available for stock status
No data available for stock status

Download Source Data

Registered users can download the original data file for calculating the scores after logging in. If you wish, you can Register now.

Fishery Improvement Projects (FIPs)

SELECT FIP

Access FIP Public Report

Progress Rating: B
Evaluation Start Date: 1 Mar 2016
Type: Basic

Comments:

FIP progress rating is B. FIP is basic and has achieved stage 4 progress over past 12 months.

1.
FIP Development
Oct 15
2.
FIP Launch
Aug 15
Mar 16
3.
FIP Implementation
Aug 18
4.
Improvements in Fishing Practices and Fishery Management
Jul 18
5.
Improvements on the Water
Verifiable improvement on the water
6.
MSC certification (optional)
MSC certificate made public

Certifications

Marine Stewardship Council (MSC)

No related MSC certifications

Sources

Credits
  1. FAO. 2013. FAO - Fisheries and Aquaculture Information and Statistics Service. Reported landed catch of common dolphinfish from the western and central Pacific Ocean. Accessed on 28/02/2013 from url: http://www.fao.org/figis/servlet/TabSelector?tb_ds=Capture&tb_mode=TABLE&tb_act=SELECT&tb_grp=SPECIEShttp://www.fao.org/figis/servlet/TabSelector?tb_ds=Capture&tb_mode=TABLE&tb_act=SELECT&tb_grp=SPECIES
  2. IATTC. 2012. Fishery Status Report No. 10, Tunas and Billfishes in the Eastern Pacific Ocean in 2011, IATTC, La Jolla, California, 2012, 166 pages. http://www.iattc.org/PDFFiles2/FisheryStatusReports/FisheryStatusReport10ENG.pdf
  3. Patterson, K. R., and J. Martinez. 1991. Exploitation of the dolphin-fish Coryphaena hippurus L. off Ecuador: analysis by length-based virtual population analysis. Fishbyte 9: 21-23.http://www.worldcat.org/title/fishbyte-newsletter-of-the-network-of-tropical-fisheries-scientists/oclc/22920190
  4. Rocha-Olivares, A., Bobadilla-Jiménez, M., Ortega-García, S., Saavedra-Sotelo, N., and Sandoval-Castillo, J.R. 2006. Mitochondrial variability of dolphinfish Coryphaena hippurus populations in the Pacific Ocean. Ciencias Marinas 32: 569–578http://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1122
  1. MSC, 2014. Variation request and response: Removal of mahi mahi unit of certifcation and subsequent name change. Available online at:http://www.msc.org/track-a-fishery/fisheries-in-the-program/in-assessment/pacific/walker-seafood-australia-albacore-and-yellowfin-tuna-swordfish-and-mahi-mahi-longline/assessment-downloads-1/20140912_var-response_remove_mahi_mahi_tun441.pdf
  1. Rocha-Olivares, A., Bobadilla-Jiménez, M., Ortega-García, S., Saavedra-Sotelo, N., and Sandoval-Castillo, J.R. 2006. Mitochondrial variability of dolphinfish Coryphaena hippurus populations in the Pacific Ocean. Ciencias Marinas 32: 569–578http://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1122
  1. AIDCP 2009 Comparison of On-Board Observer Programs AIDCP_09.pdf
References

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    Common dolphinfish - Western and Central Pacific Ocean, Taiwan, Taiwan, Province of China, Drifting longlines

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