Why this fish dye hurts fish blood
Study of Hematological Alterations and Oxidative Stress in Labeo rohita Exposed to Sub-lethal Methylene Blue
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
The strong correlation (r = -0.89) between oxidative damage and hemoglobin loss suggests the dye doesn’t just cause general stress — it specifically targets red blood cells.
Most assume oxidative stress is a side effect; this shows it’s the direct mechanism destroying oxygen transport — a targeted attack, not random damage.
Practical Takeaways
Choose seafood from farms that disclose they don’t use synthetic dyes like methylene blue, or support certifications for chemical-free aquaculture.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
The strong correlation (r = -0.89) between oxidative damage and hemoglobin loss suggests the dye doesn’t just cause general stress — it specifically targets red blood cells.
Most assume oxidative stress is a side effect; this shows it’s the direct mechanism destroying oxygen transport — a targeted attack, not random damage.
Practical Takeaways
Choose seafood from farms that disclose they don’t use synthetic dyes like methylene blue, or support certifications for chemical-free aquaculture.
Publication
Journal
Journal for Research in Applied Sciences and Biotechnology
Year
2024
Authors
Pramod Kumar Chak, D. Singh
Related Content
Claims (6)
Fish exposed to this blue dye show a spike in certain white blood cells and a drop in others, which means their immune system is stressed or not working normally.
The blue dye causes harmful chemical reactions in fish cells that damage their blood, and the more damage there is, the lower the blood’s oxygen-carrying ability becomes.
The blue dye makes the fish’s red blood cells shrink and get wrinkled, which probably stops them from carrying oxygen properly.
Scientists can tell if fish have been exposed to this blue dye by checking their blood — changes in red and white blood cells are clear warning signs.
When rohu fish are exposed to a low but toxic level of a blue dye used in fish farms, their blood loses a lot of its oxygen-carrying capacity, making them very weak.