New Aquaculture Research Reveals How Rearing Systems Influence Carp Fish Health And Blood Parameters

(MENAFN- ForPressRelease) As global aquaculture continues expanding to meet rising food demands, researchers are paying closer attention to fish health and welfare under different farming conditions. A newly published study titled“Hematological Parameters of One-Year-Old (Fingerlings) Carp Fish” has revealed that aquaculture systems play a major role in determining the physiological health of common carp (Cyprinus carpio), one of the world's most economically important freshwater fish species.

The research, conducted at the“Oq Amur” fish farm in Uzbekistan by Kh. T. Yuldoshev and U. D. Kholova, compared carp fingerlings raised under five different aquaculture systems: extensive ponds, intensive ponds, artificial ponds, tank systems, and recirculating aquaculture systems (RAS). The findings showed significant differences in hematological parameters such as hemoglobin levels, erythrocyte counts, leukocyte counts, and hematocrit values depending on the rearing environment.

According to the study, fish raised in artificial pond systems displayed the highest hemoglobin concentrations and healthier blood profiles overall. In contrast, fish reared in RAS environments exhibited lower hemoglobin and erythrocyte levels but higher leukocyte counts, indicators commonly associated with physiological stress and immune activation. Researchers suggest that factors such as high stocking density, limited natural food availability, and fluctuations in water quality may contribute to these stress responses.

The findings align with earlier aquaculture research emphasizing the importance of water quality, stocking density, and environmental conditions in fish health management. A study published in Aquaculture also highlighted how environmental stressors and dietary interventions can significantly influence fish growth performance, immunity, and blood parameters in aquaculture species.

In addition, researchers referenced related work published in IOP Conference Series: Earth and Environmental Science, which discussed the growing importance of sustainable aquaculture technologies and monitoring methods for improving fish productivity and welfare.

The study further explains that hematological indicators act as reliable biomarkers for monitoring fish health. Reduced hemoglobin and hematocrit values may indicate impaired oxygen transport and chronic stress, while elevated leukocyte levels often signal immune responses triggered by environmental challenges.

Researchers concluded that artificial pond systems may provide a better balance between environmental stability and production efficiency, making them a promising option for sustainable aquaculture. Meanwhile, intensive and recirculating systems require careful management, including improved aeration, water filtration, and stress reduction strategies, to maintain fish welfare and productivity.

The study also recommends integrating routine hematological monitoring into fish farming practices as an early warning system for disease, stress, and environmental imbalance. Scientists believe these findings could help aquaculture producers improve fish survival, optimize growth performance, and enhance sustainable seafood production worldwide.

References

1. Yuldoshev, K. T., & Kholova, U. D. (2026). Hematological Parameters of One-Year-Old (Fingerlings) Carp Fish. Current Journal of Applied Science and Technology, 45(4), 96–107.

2. Witeska, M., Kondera, E., Ługowska, K., & Bojarski, B. (2022). Hematological methods in fish–Not only for beginners. Aquaculture, 547, 737498.

3. Maftuch, Sanoesi, E., Asmara, S. D., Haromain, A. F., Nurcholis, A., & Wijanarko, E. (2020, May). Hematological analysis of common carp (Cyprinus carpio) using hematology analyzer tools and manual at fish seed center, Pasuruan, East Java. In IOP Conference Series: Earth and Environmental Science (Vol. 493, No. 1, p. 012011). IOP Publishing.

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