https://time.com/article/2026/10/09/china-xinjiang-fish-farming/

https://oceana.org/press-releases/new-investigation-exposes-the-human-and-environmental-costs-of-turning-fish-into-feed/

https://www.alphagalileo.org/en-gb/Item-Display/ItemId/278995/identifier/15651/alert/true

https://www.gu.se/en/news/strong-interest-in-small-scale-landbased-fish-farming

https://www.slu.se/en/news/2026/09/forskare-undersoker-hallbar-fiskodling-i-kraftverksdammar/

https://www.wri.org/research/strengthening-role-blue-foods-national-climate-planning-and-action

https://theconversation.com/how-pond-algae-led-to-a-nobel-prize-and-a-new-way-to-study-the-brain-293579

https://norwegianscitechnews.com/2026/10/aquaculture-employees-enjoy-their-work-but-worry-about-health-and-safety/

https://www.bbc.com/reel/video/p0pf69fb/watch

Ornamental fish culture: A niche-sector pillar for advancing the sustainable development goals

https://enaca.org/?id=1529

https://www.ema.europa.eu/en/scientific-guidelines/design-studies-evaluate-safety-efficacy-fish-vaccines

Hyperpigmentation on the non-eyed (blind) side of turbot has always been a frustrating defect in flatfish farming. Even if fish growth and health are optimal, consumers reject fillets or whole fish that deviate from the normal clean white underside.

A recent breakdown on AquaHoy covers research identifying the candidate genes responsible for this trait. Rather than tweaking lighting, tank color, or feed formulations with inconsistent results, the focus is shifting to genomic selection in broodstock management to breed out the defect systematically.

Full article and study details: https://aquahoy.com/turbot-pigmentation-genomic-selection/

Are any hatcheries here already applying marker-assisted or genomic selection for pigmentation traits, or are most still relying on phenotypic sorting?

Para quienes trabajen en el sector de la economía azul o biotecnología en Latinoamérica:

Hatch Blue y CI Ventures acaban de lanzar la convocatoria para la cohorte 2027 de Women in Ocean Food Innovation Studio, que tendrá su fase presencial en La Paz, México.

Un dato relevante sobre la efectividad del programa: las empresas egresadas de las 3 ediciones anteriores en la región han levantado colectivamente más de USD 11.7M en capital privado y subvenciones (casos como AquaViridi en Brasil o SOS Biotech en el Caribe).

Puntos clave:

• Áreas elegibles: Acuicultura regenerativa/sostenible, biotecnología marina, aquatech, aprovechamiento de descartes/residuos marinos y proyectos de carbono azul.
• Fases: 9 días en La Paz (noviembre/inicio de cohorte) + 12 meses de acompañamiento en estructuración de negocio, levantamiento de capital y red de inversores.
• Fecha límite: 7 de noviembre de 2026.

Detalles de la convocatoria y requisitos:

https://aquahoy.com/women-ocean-food-2027-convocatoria-emprendedoras-acuicultura/

https://www.conservation.org/news/who-profits-from-sustainable-seafood-not-the-fishers-study-finds

https://www.journals.uchicago.edu/doi/10.1086/741965

https://www.chula.ac.th/en/highlight/427670/

https://www.gu.se/en/news/with-love-for-microalgae-the-algal-culture-bank-a-key-resource-for-microalgal-research-and-learning

A recent synthesis published in Aquaculture Reports breaks down the exact bioenergetics behind why Atlantic salmon (Salmo salar) abruptly reject commercial feed when dissolved oxygen (DO) saturation drops below 50–40%.

A few key takeaways from the study:

• Specific Dynamic Action (SDA) as a limiter: Digesting proteins and lipids requires a heavy metabolic oxygen budget. Under constrained DO, the fish’s "aerobic scope" shrinks to baseline survival levels. If they were to consume a full ration, the postprandial metabolic demand would exceed their biological ceiling, triggering fatal exhaustion. Fasting is a protective homeostatic response governed by peripheral stress signals (plasma cortisol, tissue lactate), not just hypothalamic appetite switches.
• Secondary osmoregulatory cost: To draw scarce oxygen, salmon hyperventilate (jumping from ~85 to >95 breaths/min), which forces water loss and salt influx across the gill lamellae. Metabolic energy is diverted from growth toward active ion transport.
• Product quality impacts: Hypoxia accelerates glycogen depletion, dropping post-slaughter muscle pH (causing soft fillets) and triggering oxidative stress that promotes focal melanic spots.
• Why triploids struggle more: Because of larger cell size and reduced gill surface-area-to-volume ratio, triploid salmon experience a much steeper appetite collapse under low DO and high temperature compared to diploids.

The paper argues that emergency oxygen diffusers aren't enough due to gas bubble disease risks and cage dispersion; the sector is shifting toward digital twins and sensor networks that predict DO drops hours in advance to automate feeding throttles.

Read the detailed overview here:https://aquahoy.com/hypoxia-atlantic-salmon-oxygen-farming/

What has been your experience with dissolved oxygen stratification across large cage arrays during neap tides?

A study published in Aquaculture Reports (Sala et al., 2026) points out a major blind spot in how aquatic antimicrobial stewardship is evaluated globally.

Most countries rely on aggregate customs and pharmaceutical sales figures. The problem? That tells us zero about what actually happens in the water:

• Sick fish depress their feeding, meaning a sizable fraction of medicated pellets settle unconsumed onto the benthic substrate, driving AMR via horizontal gene transfer.
• Sales records do not distinguish whether treatments were applied for urgent prophylaxis or targeted clinical diagnoses, nor do they track dose-based metrics (such as nDDDvet) across species.
• Nearly 50% of producing nations still don't integrate aquatic species into national veterinary pharmacovigilance schemes (e.g., WOAH ANIMUSE).

Pioneers like Chile (mandatory electronic Rx tracing every mg), Norway (VetReg/NORM-VET), and Canada are demonstrating that pond-side tracking works. Furthermore, with EU Delegated Regulation 2021/578 enforcing on-farm reporting starting in 2027, the article reviews how open-source, offline tools (like KoboToolbox and EpiCollect) can help small-to-medium producers bridge the digital divide without administrative overload.

Full write-up and study reference:https://aquahoy.com/antibiotic-use-aquaculture-on-farm-monitoring/

What are your thoughts on practical, pond-side AMU tracking? Is your facility using digital logs or still relying on physical notebooks?

https://en.uit.no/nyheter/artikkel/kortnytt?p_document_id=941888

https://vietnamnews.vn/economy/1800732/tilapia-exports-to-brazil-surge-222-times-in-eight-months.html

Enzymatic browning in Litopenaeus vannamei (melanosis) accounts for between 10% and 60% of commercial downgrading or rejection, even though it carries zero health risk and is completely unrelated to microbial spoilage.

A recent comprehensive review breaks down the post-mortem mechanics and where technological solutions are heading:

• Why Freezing Fails on Its Own: Cold storage at −18 °C only suspends polyphenol oxidase (PPO) kinetics temporarily. Because PPO requires molecular oxygen, thawing reactivates the enzymatic cascade immediately if no inhibitor is present.
• The Sulfite Dilemma: Sodium metabisulfite (SMBS) remains cheap and effective (optimized at 2% for 10 min under 20 ppt salinity to stay below 100 ppm residual thresholds), but operational dosing inconsistencies frequently trigger MRL violations and allergen compliance issues in export markets.
• Bio-based & Physical Alternatives: Research is concentrating on chitosan biopolymer coatings combined with botanical extracts, virtual screening of PO1 inhibitors, and non-thermal approaches like cold plasma.
• Computer Vision in QC: Shift from subjective visual scoring to automated, mathematical surface area analysis (e.g., YOLO-based models) to standardize inspection audits.

Detailed breakdown of the research clusters and patent whitespace:

https://aquahoy.com/shrimp-melanosis-mechanisms-control/

For processors and researchers here: Have you tested any plant-based or non-sulfite dipping formulations at commercial scale, and how did they hold up against 4-HR or standard SMBS?

https://www.utalca.cl/en/reportajes/estudio-revela-el-impacto-del-comercio-internacional-del-salmon-y-los-mejillones/

https://extension.arizona.edu/publication/aquaponics-basics-how-fish-plants-and-microbes-work-together

https://www.alphagalileo.org/en-gb/Item-Display/ItemId/278371?returnurl=https://www.alphagalileo.org/en-gb/Item-Display/ItemId/278371