Observations of fish species diversity in floating artificial habitats in Koto Panjang reservoirs, Indonesia

¹ Environmental Science, Postgraduate, Universitas Riau
² Aquatic Resources Management Department, Faculty of Fisheries and Marine Science, Universitas Riau

^* Corresponding author: budijono@lecturer.unri.ac.id

Abstract

Monitoring the diversity of fish species in artificial floating habitats that are continuously tested in the waters of the Koto Panjang Reservoir is important to assess the current availability of fish species resources. This study aims to evaluate the increase in fish species in the different artificial floating habitat structures that were tested. This study was conducted from November 2023 to June 2024 in the Koto Panjang Reservoir on 9 existing floating habitat structures. Each structure has 8 attractors with media (raffia rope, plastic rope, packaging bottles) hung at a depth of 2 m. Each structure is equipped with 4 traps to catch fish every month, then counted and identified according to applicable procedures. The catch in all artificial habitats was 189 fish with a total of 21 species from the previous 16 species. The largest number of fish remained in the raffia rope media at 100% and the lowest in the strapping band at 76,2%. Meanwhile, the types of fish found in the reservoir waters were 32 species from the 44 species that had been recorded from previous research. It was concluded that raffia rope media is a media preferred by fish in artificial floating habitats.