Yvonne Sadovy de Mitcheson

Comment on “Evidence of sequential hermaphroditism in alfonsinos ( Beryx spp.) from the deep northeast Atlantic” by Cruz et al. (2025)

Yvonne Sadovy de Mitcheson, Maria Berica Rasotto

histological and anatomical criteria, sex change diagnosis The article of Cruz et al. (2025), reporting sequential hermaphroditism in two alfonsinos, Beryx splendens Lowe, 1834 and B. decadactylus Cuvier, 1829, raises serious concerns over the strength and nature of the evidence presented in …

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Does fishery management for groupers (Teleostei: Epinephelidae) protect them effectively? Context from the IUCN's Red list of threatened species

S.T. Fennessy, Christi Linardich, Kevin L. Rhodes, Joao P. Barreiros et autres

Worldwide, groupers (Epinephelidae) are commercially valued fishes, which also play key ecological roles on tropical and subtropical reefs. In 2007 and 2016, the IUCN's Groupers and Wrasses Specialist Group assessed all 160+ grouper species, with 17 of these being identified as threatened …

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Individual identification of bony fishes using unique body markings: Implications and applications

Katie Dunkley, Samuel R. Matchette, Cheuk Yu Hau, Christian Drerup et autres

The natural variation in animal body markings, such as spots, stripes and blotches, offers a powerful tool for researchers, conservationists, citizen scientists and resource managers to distinguish specific individuals within species. By building libraries of photo-identified individuals, we can track and differentiate …

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Globalism, localism and blue food systems – How can cross-scale tensions be reduced? A production perspective from UK seafood stakeholders

Alex Caveen, Bryce D. Stewart, Cameron Moffat, Daniel J. Skerritt et autres

‘Blue foods’ are derived from aquatic species that are caught or cultivated and are amongst the most globally traded commodities. Growing emphasis is being placed on blue foods in future transitions to sustainable food systems. However, recent international events such as the …

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Leveraging artificial intelligence for photo identification to aid CITES enforcement in combating illegal trade of the endangered humphead wrasse (Cheilinus undulatus)

Cheuk Yu Hau, W. K. Ngan, Yvonne Sadovy de Mitcheson

Introduction Humphead, or Napoleon, wrasse (Cheilinus undulatus) is a large reef fish highly valued in the live reef food fish trade. Overexploitation, driven primarily by demand from Chinese communities, led to its ‘Endangered’ status and CITES Appendix II listing in 2004. Hong …

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From local knowledge and science to policy: Lessons learned from Fiji's valuable grouper fisheries

Yvonne Sadovy de Mitcheson, A. Batibasaga, Chloe E. R. Hatten, Sangeeta Mangubhai

Pacific Island communities are heavily dependent on fisheries for subsistence and livelihoods. Yet, despite their importance, coastal fisheries are poorly managed and commercial pressures increasingly threaten them. Groupers (Epinephelidae) are exceptionally vulnerable to overexploitation due to aspects of their biology while their …

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Unselective, unsustainable, and unmonitored trawl fisheries? : situation analysis with case studies from Southeast and East Asia

Duncan Leadbitter, Yvonne Sadovy de Mitcheson, Nicholas B. W. Macfarlane

In 2016, the term UUU (unselective, unsustainable and unmonitored) fishing was developed and a Resolution of the World Conservation Congress, adopted by Members, tasked IUCN’s Species Survival Commission with reporting on the concept. The resulting situation analysis utilises the trawl fisheries of …

Cephalopholis species

Matthew T. Craig, Yvonne Sadovy de Mitcheson, Phillip C. Heemstra

Body depth contained 2.5–2.9 times in standard length. Head length 2.1 to 2.3 times in standard length; preopercle rounded, the posterior edge finely serrate, the lower edge fleshy; upper edge of operculum very convex; maxilla extends past eye; teeth noticeably large. Gill …

Saloptia species

Matthew T. Craig, Yvonne Sadovy de Mitcheson, Phillip C. Heemstra

Body oblong, robust, depth less than head length and contained 2.6–3.0 times in standard length. Head length 2.5–2.6 times in standard length; snout distinctly longer than eye diameter; nostrils set in a shallow groove running forward from eye, the posterior nostrils about …

Epinephelus species

Matthew T. Craig, Yvonne Sadovy de Mitcheson, Phillip C. Heemstra

Body depth less than head length, depth contained 2.6–3.2 times in standard length. Head length 2.1–2.5 times in standard length; interorbital area flat or slightly concave; preopercle evenly serrate, without obvious angle; subopercle and interopercle smooth; posterior and anterior nostrils subequal. Gill …

Cromileptes species

Matthew T. Craig, Yvonne Sadovy de Mitcheson, Phillip C. Heemstra

Body compressed, the depth less than head length and contained 2.6–3.0 times in standard length (for fish 12–37 cm SL); body width 2.4–2.6 times in the depth. Head length 2.5–2.8 times in standard length; dorsal head profile distinctly concave, rising steeply at …

Mycteroperca species

Matthew T. Craig, Yvonne Sadovy de Mitcheson, Phillip C. Heemstra

Body oblong, compressed, depth contained 2.7–3.2 times in standard length. Head length 2.5–2.7 times in standard length; maxilla width 4.4–5.8% of standard length; interorbital area convex; preopercle angular, with serrae at the angle enlarged, forming a weak lobe; posterior and anterior nostrils …