Longtail cusk

📖 Overview

Longtail cusk (Brosmolus longicaudus), first described by Machida, 1993 is a small fish in the family Dinematichthyidae (order Ophidiiformes). Adults typically reach 5.80 cm in maximum length. It inhabits marine coastal and open-ocean environments. It occurs in Tropical waters. It feeds on a mix of small fish and invertebrates as a mid-level predator. On the IUCN Red List, it is classified as Least Concern.

🔬 Taxonomy

🐟 Physical Description

Dorsal soft rays (total): 124 - 129; Anal soft rays: 90 - 94; Vertebrae: 56 - 59. This species is distinguished by the following characters: anterior nostril low on snout; copulatory organ of males with a simple and flap-like, small pair of (outer) pseudoclaspers; large species (> 59 mm SL, as indicated from a pre-adult male), very slender (body depth at origin of anal fin 10.9-11.7 % SL); ventral fin base to anal fin origin 23.3-24.3 % SL); 14-15 precaudal vertebrae, 56-59 total vertebrae; D 124-129; A 90-94; 23-24 pectoral fin rays; 7 branchiostegal rays; V in D 2.4-2.5; scale patch on cheek only on head; scales on operculum absent; upper preopercular pore absent; separate opening for the first and second lower preopercular pore; elongated otolith, its length to height 2.1, sulcus straight and short, its otolith length to sulcus length 2.1, fused colliculi; maxilla slightly expanded posterio-ventrally; anterior anal fin pterygiophore is variable in length .: elongated.

🌀 Behaviour

Behavioural data for Longtail cusk is currently being reviewed.

🦐 Diet

🥚 Reproduction

🌍 Habitat & Distribution

Marine; reef-associated. Tropical West Pacific: Australia.

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

🛡️ Conservation Assessment

📊 Population Risk & Fisheries

🌐 Names & Taxonomy

Scientific Synonyms

🔍 Similar Species

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .

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