**5. Conclusions**

In brief, the application prospects for dietary curcumin supplementation in greater amberjack can be confirmed based on the results of this study. Curcumin has shown enhanced capability of protective effect and stress recovery in nutritional function, antiinflammation, immune system, disease resistance, tissue protection, etc. These results are consistent with previous studies. In addition, our research shows that the relationship between the effect and the additive amount was not linear, and that a greater amount of additive did not necessarily lead to a better effect; therefore, a wider range of additiveamount experiments should be pursued. Eventually, the curcumin effect curve in greater amberjack will be obtained through these works, in order to provide a better reference for future practical applications.

**Supplementary Materials:** The following supporting information can be downloaded at: https: //www.mdpi.com/article/10.3390/jmse10111796/s1.

**Author Contributions:** Z.M. and J.H. (Jiawei Hong) conceptualization of the experiment; J.H. (Jiawei Hong) and Z.F. methodology and performance of the experiment; J.H. (Jing Hu) performed the statistical analysis; J.H. (Jiawei Hong) and Z.F. writing—original draft preparation; S.Z. writing, review and editing; G.Y. and Z.M. supervised the final version of the paper. All authors have read and agreed to the published version of the manuscript.

**Funding:** This study was supported by Central Public-interest Scientific Institution Basal Research Fund, CAFS (NO. 2020TD55), Guangxi Innovation Driven Development Special Fund Project [Guike AA18242031].

**Institutional Review Board Statement:** This study was carried out in strict accordance with the recommendation in the Animal Welfare Committee of Chinese Academy of Fishery Sciences. No protected species were used during the experiment.

**Informed Consent Statement:** Not applicable (Present study did not involve humans). Written informed consent has been obtained from all the patients to publish this paper.

**Data Availability Statement:** The data presented in this study are available on request from the corresponding author.

**Conflicts of Interest:** The authors declare no conflict of interest.
