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Diversity and abundance of fish in the rocky habitat of Anzali Port Coast (Southern Caspian Sea Basin)
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Fariborz Sayad-Oghli *   , Alireza Mirzajani , Nader Shabanipour , Yaseman Sayad-Oghli , Keyvan Abbasi Ranjbar |
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Abstract: (59 Views) |
Conservation of biodiversity, including fish, is a global concern, and studying the diversity and population of fish in different ecosystems, including rocky shores, is of particular importance for conservation management. This study was conducted to determine the diversity and abundance of fish in the Anzali rocky shore in the southern Caspian Sea basin. In this regard, fish sampling was carried out in the spring and summer seasons of 2010 to 2014 using underwater videography and diving. In this study, 21 fish species belonging to 13 families were identified, of which the families Leuciscidae and Gobiidae were the most diverse with 6 and 3 species, respectively. A study of the relative abundance of fish caught in the rocky habitat showed that in a total of 5 years, the species sand goby, shemaya fingerling, kutum fingerling, round goby and Leaping grey mullet constituted about 16.9, 16.0, 16.0, 15.5 and 12.6% of the population, respectively, and there was no particular order in the dominance of the most frequent and abundant species among different years. Also, the relative abundance of juvenile kutum and leaping grey mullet was higher in summer than in spring, and in Caspian, round and sandy gobies, it was higher in spring than in summer. Overall, the present study showed that rocky habitat plays an important role in the survival of the gobiid species and plays a positive role in feeding and sheltering various fish from sea waves. It is suggested that other rocky habitats should also be subjected to a comprehensive biological study so that the information obtained can be utilized in stock management.
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| Keywords: Rocky environment, Fish, population, Ecology, Caspian Sea |
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Type of Study: Research |
Subject:
Special
Received: 2026/04/29 | Accepted: 2026/05/4 | Published: 2026/05/25
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