Habitat Characteristics and Gonadal Maturity Assessment of Keudawah (Rasbora arundinata Lumbantobing, 2014) to Support Management and Domestication Strategies | ||
| Egyptian Journal of Aquatic Biology and Fisheries | ||
| Volume 29, Issue 5, September and October 2025, Pages 3553-3568 PDF (560.1 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejabf.2025.386144.5880 | ||
| Authors | ||
| Mu'amar Abdan* 1; Sulistiono Sulistiono2; Mohammad Kamal3; Ali Mashar4; Nurlisa Alias Butet5 | ||
| 1Department of Aquaculture, Faculty of Agriculture, Gajah Putih University, Aceh | ||
| 2Department of Aquatic Resources Management, Faculty of Fisheries and Marine Science, IPB University, Indonesia | ||
| 3Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, IPB University, Indonesia | ||
| 4Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, IPB University, Bogor, Indonesia | ||
| 5Department of Aquatic Resource Management, Faculty of Fisheries and Marine Science, IPB University, Bogor, Indonesia. | ||
| Abstract | ||
| The Krueng Lanca River in Aceh Province is an ecologically important freshwater system that supports local livelihoods and aquatic biodiversity. Rasbora arundinata, a native rheophilic fish species, inhabits the river’s fast-flowing upstream reaches, characterized by rocky-sandy substrates and dense riparian vegetation. This study investigates the species’ reproductive biology and habitat preferences to support sustainable management and domestication efforts. Over a 12-month period, data on physicochemical parameters, habitat structure, gonadosomatic index (GSI), and fecundity were collected from six sampling stations. The species was found to prefer moderate to fast-flowing waters with coarse substrates and optimal environmental conditions: temperature (26.03–27.72 °C), pH (6.98–7.69), turbidity (1.62–3.73 NTU), and dissolved oxygen (5.41–6.74 mg/L). Spawning activity peaked in April and September. Strong correlations were observed between environmental factors and reproductive indices, including turbidity and male GSI (r = 0.71), average catch and GSI (r = 0.87), TDS and female GSI (r = 0.76), and temperature and female GSI (r = 0.41). Station 2 was identified as the core spawning site due to its stable hydrological conditions and the highest GSI and catch rates. These findings provide critical ecological insights for habitat-based conservation strategies and the development of sustainable aquaculture systems for R. arundinata in tropical river ecosystems. | ||
| Keywords | ||
| Conservation management; Habitat ecology; Physical-chemical parameters; Reophilic fish; Spawning habitat | ||
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