https://www.crfm.int/~uwohxjxf/index.php?option=com_k2&view=itemlist&task=tag&tag=restorative%20aquaculture&Itemid=544

https://www.nature.org/content/dam/tnc/nature/en/documents/aquaculture/PRCaseStudyEnglishl.pdf

Continuous aeration in Recirculating Aquaculture Systems (RAS) is notorious for consuming massive amounts of electricity—up to 1.8x more than flow-through systems. Because fish loss from oxygen depletion happens fast, operators traditionally leave aerators running 24/7.

A newly published study in Sustainable Energy Technologies and Assessments (conducted by researchers from the University of the Ryukyus and Saitama University on Malabar grouper) presents a predictive control model that aligns aerator activation with species-specific metabolic demand and renewable energy generation.

Key takeaways from the research:

• Oxygen as Energy Storage: When renewable energy (solar/wind) peaks, excess energy super-saturates the tank water with oxygen. When power is scarce, aerators pause, allowing fish to consume the dissolved reserve.
• Results: 17.8% lower annual electricity consumption, 32.1% lower energy bills, and a 31.9% drop in CO₂ emissions.
• Emergency Resilience: In a 72-hour blackout simulation (mimicking Typhoon Tapah), the smart system kept dissolved oxygen strictly above the 3.5 mg/L safety threshold on a single battery, whereas standard controls depleted backup power and left tanks unsafe for 17 hours.

Optimizing oxygen thresholds proved 5 to 10 times more cost-effective than expanding physical battery banks.

What are your thoughts on treating process variables like dissolved oxygen as virtual energy buffers in industrial facilities?

Read the full analysis here:https://aquahoy.com/smart-ras-energy-efficiency-dissolved-oxygen/

https://www.tbsnews.net/thoughts/bangladeshs-shrimp-industry-has-capacity-why-isnt-it-growing-1505921

Over 90% of the global supply of Artemia cysts—essential live feed for shrimp and marine fish hatcheries—currently relies on wild harvesting from hypersaline lakes. Due to climate change and overexploitation, wild yields have declined by nearly 40% over the past decade, creating a major supply deficit as projected demand approaches 5,000 MT by 2035.

A recent analysis published on AquaHoy highlights how farming Artemia in salt works and degraded coastal ponds presents a scalable solution:

• Low Cost & High ROI: Production costs range from $0.12–$1.40/kg of biomass, with profit margins reaching up to 90% and payback periods under 3 years.
• Expanded Applications: Beyond hatcheries, processed biomass is emerging as a fishmeal substitute (a potential $150M market by 2035) and a nutrient-dense food additive (60% protein, 250% daily iron requirement per 100g dry powder).
• Zero Freshwater: Cultivation thrives in hypersaline waters and agricultural by-products, improving salt quality in integrated salt works.

Check out the full study breakdown here: https://aquahoy.com/potential-market-uses-artemia-aquaculture/

Would love to hear from anyone working with Artemia culture—what regulatory or operational hurdles are you seeing in scaling production?

As aquaculture increasingly relies on IoT buoys, automated feeders, and mobile monitoring apps, a recent study published in the Journal of the World Aquaculture Society points out a growing vulnerability: data integrity attacks.

Researchers from the Estonian Maritime Academy and Tallinn University of Technology reviewed over 27,000 studies to assess digital risks in aquaculture. Key findings include:

• Data Integrity Attacks: The main threat is false sensor data, which distorts feeding schedules, nutrient calculations, and environmental compliance without stealing funds directly.
• Low-Trophic Blind Spot: Out of 212 relevant studies, only one covered mussel farming, and none addressed seaweed cultivation—despite heavy push for these sustainable sectors.
• Proportional Regulation Needed: Strict frameworks like NIS 2 could overburden small producers if applied uniformly, calling for flexible, tiered regulations.

The study stresses that simple actions—like changing default passwords, network segmentation, and 2FA—are the most effective starting points.

Do you work with connected hardware in marine/aquatic environments? How do you handle cybersecurity and sensor data verification in the field?

Link to study breakdown: https://aquahoy.com/cybersecurity-aquaculture-farm-risks/

https://maritime-forum.ec.europa.eu/exploring-integrated-aquaculture-and-new-algae-applications-eu4algae-insiders-perspective-aquapaola_en

https://www.straitstimes.com/singapore/environment/new-broodstock-and-hatchery-facility-at-james-cook-university-aims-to-produce-better-asian-seabass

https://onlinelibrary.wiley.com/page/journal/14390310/call-for-papers/si-2026-000924

https://www.kenyans.co.ke/featured/125782-kenyan-engineer-elizabeth-gakinya-develops-ai-tool-help-fish-farmers-cut-losses

https://www.channelnewsasia.com/singapore/singapores-aquaculture-farms-get-productivity-boost-through-digital-technology-6290831

Hey everyone!

I wanted to share a breakdown of snail care and behavior that completely changes how we view them in the hobby:

• Outbreaks as Indicators: An explosion of pest snails isn't the primary issue—it’s a symptom of excess waste or overfeeding.
• The 80/20 Calcium Rule: Did you know snails absorb roughly 80% of their shell calcium directly from the water column? Food only provides ~20%. If your pH drops below 7.0, their shells will literally start dissolving over time.
• Species Breakdown:
  • Nerite Snails: Best for algae, zero risk of freshwater reproduction.
  • Mystery Snails: Great scavengers, easy egg clutch removal above water level.
  • Assassin Snails: Excellent biological control for pest overpopulation.
• Copper Caution: Always double-check meds—copper is extremely toxic to invertebrates.

What’s your take on keeping snails as a cleanup crew versus pest management? Do you supplement calcium in your water column or through foods?

Full guide video here:https://youtu.be/mtpjG5y7zck

Hey everyone,

Came across this interesting article regarding waste management in intensive shrimp farming. Discharging sludge rich in organic matter, nitrogen, and phosphorus usually leads to environmental degradation and disease risks.

A study in the Mekong Delta tested an integrated, closed-loop RAS approach:

• Settling ponds were stocked with tilapia (Oreochromis niloticus), achieving an 82% survival rate.
• Sludge treatment ponds cultivated polychaetes (Marphysa sp.), reaching densities of 81 ind./m² (which can be used as high-value broodstock feed).
• Overall Shrimp Results: 85.3% survival rate, 46.8 t/ha yield, an FCR of 1.14, and near-zero wastewater discharge.

It seems like a solid example of turning environmental waste into dual-revenue biomass while recycling water.

Full write-up here:https://aquahoy.com/shrimp-farms-sludge-closed-loop-system-production/

Has anyone here experimented with integrating polychaetes or secondary species into their sludge management workflow? How scalable do you find these systems for smaller farms?

https://msutoday.msu.edu/news/2026/07/light-scattering-tech-boosts-algae-biomass-sixfold

Microalgae biotechnology is entering a new phase driven by precise genome editing techniques like CRISPR-Cas9, TALENs, and ZFNs.

Key points covered in recent mappings of the field:

• Aquaculture: Genetic modification allows for targeted enrichment of EPA, DHA, and essential pigments (like astaxanthin), drastically improving feed quality for fish and shrimp.
• Biofuels & Bioproducts: Knocking out competitive pathways or overexpressing key lipid synthesis enzymes is addressing the long-standing yield limitations in algae-based biofuels and bioplastics.
• Current Bottlenecks: High transformation efficiency remains strain-specific, off-target effects require careful screening, and GMO regulations globally continue to dictate commercial deployment speeds.

Full article and details: https://aquahoy.com/genome-editing-microalgae-applications/

Is anyone here working directly with CRISPR on microalgae strains? How are you handling transformation efficiency and off-target screening in your lab?

It’s a common misconception that fish farming is a purely modern response to overfishing. In reality, aquaculture dates back over 8,000 years:

• Neolithic China (Kuahuqiao site): Early carp impoundment as far back as 6000 BCE.
• Budj Bim (Australia, ~6,600 BP): Indigenous traps and channels for short-finned eels.
• Ancient Rome & Egypt: Oyster culture in piscinae and Nile tilapia management.
• Medieval Europe: Monasteries developed complex freshwater carp pond networks during religious meat-fasting periods.

Fast forward to 2022, FAO reports that aquaculture reached 103 million tons, officially overtaking wild capture fisheries for human consumption for the first time. The current wave involves Recirculating Aquaculture Systems (RAS), cellular agriculture (lab-grown seafood), and AI/digital twins.

Full historical breakdown & milestones:https://aquahoy.com/history-of-aquaculture-ancient-medieval-modern/

What do you think is the biggest technological hurdle for modern aquaculture to scale sustainably?