Hymenocephalus Hachijoensis
📖 Overview
Hymenocephalus Hachijoensis (Hymenocephalus hachijoensis) is a ray-finned fish of the family Macrouridae. It inhabits marine (saltwater) waters in deep-water environments. This species can reach a maximum total length of 20 cm. It occurs at depths between 570 and 1060 metres. With a trophic level of 3.4, it is a low-level carnivore, feeding on invertebrates and small organisms.
🔬 Taxonomy
🐟 Physical Description
This species is distinguished by the following characters: pelvic fin rays 7-8; pectoral fin rays 14-15; short, barely projecting snout, 15-17% HL; long barbel, 30-35% HL, reaching vertical through center of orbit; large orbit diameter, 35-38% HL; infraorbital width 10-12% HL; moderately long preopercular supporter, with straight rear margin, 6-7% HL; 18-20 gill rakers; ventral striae reaching to ½ distance from pelvic fin bases to periproct; otolith has high predorsal lobe, with colliculi separated, closely placed across collum; otolith length to height (OL:OH), 1.05; total colliculum length to pseudocolliculum length (TCL:PCL), 1.6 .Cross section: compressed.
🌀 Behaviour
Behavioural data for Hymenocephalus Hachijoensis is currently being reviewed.
🦐 Diet
🥚 Reproduction
🌍 Habitat & Distribution
Marine; benthopelagic; depth range 570 - 1060 m . Deep-water Northwest Pacific: off Hachijojima, Japan (Ref.
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
📊 Population Risk & Fisheries
🔍 Similar Species
👥 Community & Contribute
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