Oneirodes Macrosteus

📖 Overview

Oneirodes Macrosteus (Oneirodes macrosteus) is a ray-finned fish of the family Oneirodidae. It inhabits marine (saltwater) waters in deep-water environments. This species can reach a maximum total length of 20.6 cm. It occurs at depths between 0 and 1000 metres. With a trophic level of 4.2, it is a mid-level predator. It is assessed as Least Concern on the IUCN Red List.

🔬 Taxonomy

🐟 Physical Description

Dorsal soft rays (total): 6; Anal soft rays: 4. Characterized by having esca with stout, internally pigmented anterior appendage less than half the length of escal bulb and bearing numerous tapering filaments at distal tip and 2-3 filaments along anterior margin; absence of medial escal appendages; terminal escal papilla truncated with two bilaterally placed distal pigment spots in specimens 20mm and larger; posterior escal appendage approximately one-half of escal bulb to longer than escal bulb in large specimens; distal one-third to one-half of posterior appendage split into numerous filaments; absence of lateral escal appendages; filamentous anterolateral escal appendage, less than length of anterior appendage; distal tips of filaments of anterior and posterior escal appendages and entire length of filaments of anterolateral escalappendage with dark melanophores in specimens 124mm and larger; relatively long and narrow subopercle, without indentation on posterodorsal margin; ventral fork length of opercle 24.4-26.0% SL; ratio of lengths of dorsal and ventral forks of opercle 0.46-0.53; absence of epibranchial teeth; presence of teeth on pharyngobranchial II; upper jaw teeth 26-70, lower jaw teeth 27-65; teeth on vomer 5-8; dorsal fin rays 6; anal fin rays 4; pectoral fin rays 15-17; head length 35.7-42.5% SL; head depth 32.2-45.0% SL; length of premaxilla 28.8-33.5% SL; length of lower jaw 39.9-47.5% SL; illicial length 23.8-40.2% SL .

🌀 Behaviour

Behavioural data for Oneirodes Macrosteus is currently being reviewed.

🦐 Diet

Diet information for Oneirodes Macrosteus is currently being compiled.

🥚 Reproduction

Reproduction data for Oneirodes Macrosteus is currently being compiled.

🌍 Habitat & Distribution

Marine; bathypelagic; depth range 0 - 1000 m . Deep-water North Atlantic: single specimen from the Irminger Sea (Ref.

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

🛡️ Conservation Assessment

📊 Population Risk & Fisheries

🐠 Related Species

🔍 Similar Species

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