Longtail cusk (Brosmolus longicaudus) fish species and information / pictures of Longtail cusk - Brosmolus longicaudus

Longtail cusk (Brosmolus longicaudus) fish species information

Scientific Name
Brosmolus longicaudus

Common Name
Longtail cusk

Biology
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 (Ref. 76869).

Classification

Classified By
Machida, 1993
Class
Ray-finned fishes (Actinopterygii)
Order
Cusk eels (Ophidiiformes)
Family
Viviparous brotulas (Bythitidae)

Distribution

Region
Indo-West Pacific
Distribution
Indo-West Pacific: Australia.
Range
Unknown

Environment

Climate
Tropical
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
Unknown m
Depth To - meters
Unknown m
Zone
reef-associated
Environment
Marine; reef-associated
Trophic Level
3.21 s.e. 0.51 Based on size and trophs of closest relatives
Occurs in Marine / Salt water
True
Occurs in Brackish water
False
Occurs in Fresh Water
False
Occurs on Reefs
True
Is kept in Aquariums
False

Physical Size and Genetics

Maximum Length
5.8 cm
Common Length
Unknown cm
Phylogenetic Diversity Index
PD50 = 1.0000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Fisheries: of no interest
Vulnerability
Low vulnerability (12 of 100)
Resilience
Low, minimum population doubling time 4.5 - 14 years (Assuming Fec
Threat To Humans
  Harmless
IUCN Red List Status
  Not Evaluated