Oriental arrowtooth eel
📖 Overview
Oriental arrowtooth eel (Dysommina orientalis), first described by Tighe, Ho & Hatooka, 2018 is a large fish in the family Synaphobranchidae (order Anguilliformes). Adults typically reach 62.00 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 120 to 400 metres. It occurs in Subtropical waters. Diet is predominantly piscivorous, targeting other fish and larger prey.
🔬 Taxonomy
🐟 Physical Description
Vertebrae: 137 - 141. This species is distinguished by the following set of characters: predorsal vertebrae 11-12, total vertebrae 137-141, eye diameter less than 10% head length; vomerine dentition is reduced to 3 large compound teeth set in papillose pads with a fourth small tooth more posteriorly, maxillary and mandibular teeth numerous but small . Compared to specimens collected from Taiwan and Japan, the only Vietnamese specimen has a slightly larger pre-anal length, 30.3% TL (vs. 27.0%-29.8% TL) and a slightly shorter tail 69.7% TL (vs. 70.2%-73.0% TL); specimen has an adnasal pore, whereas absent in the Taiwanese specimen .Cross section: oval.
🌀 Behaviour
Behavioural data for Oriental arrowtooth eel is currently being reviewed.
🦐 Diet
🥚 Reproduction
🌍 Habitat & Distribution
Marine; benthopelagic; depth range 120 - 400 m . Subtropical
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
📊 Population Risk & Fisheries
🔍 Similar Species
👥 Community & Contribute
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