Exploring the Ichthyodiversity of Cikaso River, Indonesia

Baihaqi, Faqih; Syafitri, Alya; Rahmadani, Ufaira; Annida, Shafira Bilqis

doi:10.21608/ejabf.2025.442389.6998

Exploring the Ichthyodiversity of Cikaso River, Indonesia

Document Type : Original Article

Authors

¹ Department of Fisheries, Faculty of Fisheries and Marine Science

² Fisheries Study Program, Faculty of Fisheries and Marine Sciences, Universitas Padjadjaran

³ Marine Tourism Study Program, Vocational School, Universitas Padjadjaran

10.21608/ejabf.2025.442389.6998

Abstract

This comprehensive study undertakes a vital exploration of fish diversity within the Cikaso River in Sukabumi, Indonesia, based on a complete year of observations conducted in 2021. Fish ichthyodiversity was assessed using three ecological indices: the Margalef’s species richness index (Dₘg), the Shannon-Weaver diversity index (H'), and the Pielou evenness index (E'). Fish samples were collected monthly using traps. A total of 33 fish species from 23 genera, 12 families, and 10 orders were identified. Most fish were found in the juvenile and adult stages, with a few fish species also found in the larval stage. Margalef’s species richness index fluctuated between 3.04 and 4.55, with the highest diversity value in May. Similarly, the Shannon-Weaver diversity index reached its highest level in May, with fluctuations ranging from 2.50 to 2.84 throughout 2021. Both indices reflect the relatively high fish diversity in the Cikaso River. The Pielou evenness index (E') values were recorded with dynamic fluctuations, with a narrow range between 0.80 and 0.88 which shows a high level of evenness.

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