I have done a study on microplastics from commercial fish from the southern Caspian Sea. But after sending to different Journals, the opinions of the reviewers are as follows:This study performed the detection and occurrence of microplastics in the gastrointestinal tract of commercial fish species in the southern Caspian Sea. For the last few years, thousands of articles have been published on the quantification and characterization of MPs in different Fish species, and the study of this area is well covered. This manuscript is suffering from lack of novelty, and It would be nice if the authors linked up this study with any ecological perspectives. Authors can assess and include ecological risks and submit this MS in some regional journals. M&M seems very weak in this manuscript.  I want researchers to have comments and ideas to improve the article