Bigeye cusk

📖 Overview

Bigeye cusk (Alionematichthys riukiuensis) is a ray-finned fish of the family Dinematichthyidae. It inhabits marine (saltwater) waters in reef-associated environments. This species can reach a maximum total length of 7.9 cm. It occurs at depths between 0 and 10 metres. With a trophic level of 3.3, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Least Concern on the IUCN Red List.

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 77 - 92; Anal soft rays: 59 - 72; Vertebrae: 41 - 44. This species is distinguished by the following characters: D 77-92; A 59-72; moderately large eyes (2.5-3.0% SL); moderately slender, massive body, snout with many cirri; cheeks with scales and a large scale patch on opercular spine(6-17), with large specimens having a few scales below opercular spine; with upper preopercular pore; outer pseudoclasper broad-based, not very large, not extending beyond hood in resting position; the inner pseudoclasper is not much smaller than the outer one, equal anterior and posterior lobes, anterior lobe broadly connected to anterior rim of outer pseudoclasper; slender otolith, its length to height 2.2-2.4, with gently curved dorsal rim; otolith length to sulcus length 1.6-1.7, ostium length to caudal length 3.5-4.0; vertebrae 11-12 + 30-32 = 41-44 . : elongated; Cross section: compressed.

🌀 Behaviour

Behavioural data for Bigeye cusk is currently being reviewed.

🦐 Diet

Diet information for Bigeye cusk is currently being compiled.

🥚 Reproduction

Reproduction data for Bigeye cusk is currently being compiled.

🌍 Habitat & Distribution

Marine; reef-associated; depth range 0 - 10 m . Tropical

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

🛡️ Conservation Assessment

📊 Population Risk & Fisheries

🐠 Related Species

🔍 Similar Species

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