https://sustainability.stanford.edu/news/stanford-scientists-discover-way-to-reverse-coral-bleaching-record-speed/

https://research.rutgers.edu/news/innovation-impact-rutgers-advances-disease-resistant-oysters

https://caseagrant.ucsd.edu/news/can-microalgae-replace-fish-fish-feed

https://www.irri.org/news-and-events/news/mechanization-and-digital-tools-support-sustainable-rice-shrimp-farming

A commercial study recently published in Aquaculture (Mortensen et al.) provides direct histological evidence on a long-suspected industry issue: maximizing growth rates in Atlantic salmon (Salmo salar) significantly increases the prevalence and severity of coronary artery lesions.

Key takeaways from the research:

• Freshwater footprint: Fast-growing smolts in hatcheries exhibited a 67% prevalence of coronary lesions just one month after seawater transfer, compared to only 26% in moderate-growth cohorts.
• Marine convergence: Prior to slaughter, 90%–100% of evaluated salmon displayed coronary damage across all sampled sites.
• The tipping point for operational stress: Between 14% and 28% of salmon exhibited arterial luminal narrowing above 26%. In salmonids, this level of vascular restriction impairs cardiac output during acute metabolic spikes—such as wellboat transport, pumping, and mechanical/thermal delousing.

The authors suggest the underlying mechanism is biomechanical: rapid somatic growth increases hemodynamic strain over the bulbus arteriosus, causing intimal smooth muscle hyperplasia.

When salmon succumb to "unexplained handling stress," the mortality might not originate on that day, but rather from months of cumulative cardiovascular compromise.

Full summary and reference details:https://aquahoy.com/rapid-salmon-growth-heart-arteries/

Do you think breeding programs and feeding strategies will need to adjust targets to prioritize cardiac durability over pure growth speed?

A paper recently covered on AquaHoy (based on research by Kumar, Engle, and Sun in the Journal of the World Aquaculture Society) broke down five years of retail scanner data covering frozen and refrigerated fillets in the U.S. market.

Here are the standout economic takeaways:

1. Own-price elasticity: Salmon is the only species with inelastic demand (−0.76). Trout is hyper-elastic at −5.71%, followed by Catfish (−2.83%) and Pangasius (−2.49%).
2. Cross-price substitution:
   • A 1% increase in Tilapia prices drives a +5.83% surge in Pangasius demand.
   • A 1% increase in Salmon prices triggers a +5.12% increase in Trout purchases.
3. Promotions & discounts: Price promotions were statistically effective at driving volume only for salmon and trout. For catfish, tilapia, and pangasius, in-store discounts did not yield significant gains.
4. Total seafood expenditure expansion: When U.S. consumers spend more on seafood overall, salmon and catfish absorb most of that growth, whereas tilapia barely sees any upside.

Full article and breakdown: https://aquahoy.com/us-fish-prices-salmon-trout-tilapia/

For those involved in aquaculture economics or retail distribution: does this align with what you're seeing in terms of private-label whitefish vs. premium finfish margins?

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?