Fresh Fish Handling Techniques for Fresh Seafood Supply

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Delivering Freshness on Wheels – The Science Behind Live Fish Transport!

In this video, you see how fish are transported alive in a mobile water tank, ensuring they reach markets healthy and fresh. This process combines biological understanding, water chemistry, and mechanical engineering to preserve fish quality during long-distance travel.


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Why Keep Fish Alive During Transport?

Fish begin to spoil rapidly after death due to enzyme activity and bacterial growth. By transporting them alive:

Nutritional Value is Preserved: Proteins, omega-3 fatty acids, and essential minerals remain intact.

Zero Chemical Preservatives: No need for ice or artificial treatments to keep fish fresh.

Consumer Choice: Buyers can inspect live fish for health and freshness before purchase.



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The Science of Transport Tanks

1. Oxygen Enrichment:
Fish breathe dissolved oxygen (DO) in water. During transport, oxygen diffusers keep DO levels between 6–8 mg/L, preventing suffocation.


2. Temperature Regulation:
Transport water is maintained around 18–20°C, slowing fish metabolism and reducing oxygen demand by up to 40% compared to higher temperatures.


3. Water Quality Balance:
Fish release ammonia during stress. Special buffering agents keep ammonia below 0.05 mg/L, while pH stays between 7.2 and 8.0, protecting their gill function.


4. Space Optimization:
Density limits are scientifically calculated at 30–40 kg/m³, preventing overcrowding injuries or oxygen depletion.




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Unloading Mechanism

Instead of using nets that harm fish scales and slime coating, the tank tilts to release fish naturally with water flow into sorting crates. This low-stress method maintains survival rates above 95% while speeding up the market preparation process.


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Global Importance

Over 3 billion people worldwide depend on fish as a major protein source.

More than 60% of farmed fish are delivered using live-water transport systems like this.

Such scientific handling reduces post-harvest losses by 25–40%, making seafood production more sustainable.



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Innovation meets biology in this process. By understanding aquatic physiology and applying precise engineering, live fish transport systems ensure fresh, safe, and high-quality seafood reaches markets—bridging fish farms and dinner tables worldwide.