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Additional Freshwater Fishes of Simeulue Island, with Special Reference to the Presence of Sharp-Nosed River Mullet Cestraeus oxyrhyncus (Actinopterygii: Mugilidae) Iqbal, Muhammad; Amey, Tom; Kusuma, Irda; Alim, Satri Sara; Amin, Afri
BIO PALEMBANICA Vol 2 No 1 (2025): Bio Palembanica
Publisher : Lembaga Penelitian, Pengabdian Kepada Masyarakat dan Kepustakaan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36982/bio.v2i1.5518

Abstract

This study reports new records of freshwater fish species from Simeulue Island, Aceh Province, Indonesia. A biodiversity survey conducted in July 2021 revealed five additional fish species not previously documented on the island, including Acentrogobius sp., Giuris margaritaceus, Cestraeus oxyrhyncus, Poecilia reticulata and Clarias sp. The survey also confirmed the presence of introduced species, such as Nile Tilapia Oreochromis niloticus and Guppy Poecilia reticulata, highlighting the need for monitoring and managing non-native species in the region. The discovery of C. oxyrhyncus, currently classified as Data Deficient, accentuates the importance of further research to determine its threats, ecology, population size, and trends. This study contributes to the understanding of freshwater fish diversity on Simeulue Island and emphasises the importance of conservation efforts to protect the biodiversity of small islands in Indonesia. Keywords: Aceh, freshwater fish, Indonesia, Simeulue Island, Sumatra.
First record of Spiny Turtle Heosemys spinosa (Gray, 1831) (Testudines: Geoemydidae) on Babi and Lasia Islands, West Sumatran Islands, Indonesia Anasari, Silvi Dwi; Iqbal, Muhammad; Amey, Tom
BIO PALEMBANICA Vol 2 No 2 (2025): Bio Palembanica
Publisher : Lembaga Penelitian, Pengabdian Kepada Masyarakat dan Kepustakaan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36982/bio.v2i2.6171

Abstract

The Spiny Turtle Heosemys spinosa (Gray, 1831) is an endangered freshwater species found in parts of Southeast Asia, but records from offshore islands are scarce. This study documents the first occurrence of H. spinosa on Babi and Lasia Islands, off the west coast of North Sumatra, Indonesia. Between 15 October and 25 December 2023, nine individuals were observed on Lasia Island, and another on Babi Island in August 2025. The species was found in wet forest floors, mangroves, and leaf-littered habitats within protected forests. Both uninhabited islands retain extensive old-growth forest, suggesting they may serve as refuges for H. spinosa. This record expands the species’ known range and highlights the need for further research and conservation on Indonesia’s lesser-studied satellite islands.