Synonyms: Ophidium aculeatum: loch, 1787. Rhynchodella aculeata: Day, 1878; Day, 1889; Shaw and Shebbeare, 1937. Macrognathus aculeatus: Smith, 1945; Munro, 1955; Sterba, 1962; Bhuiyan, 1964. Common name: Spiny eel (English name). Bangla name: Tara baim. Taxonomic position: