Etmopterus westraliensis
Ng, White, Liu & Joung, 2025
Classification: Elasmobranchii Squaliformes Etmopteridae
	Reference of the original description
	
	
Etmopterus westraliensis, a new species of lanternshark (Squaliformes: Etmopteridae) from Western Australia, with redescription of Etmopterus brachyurus. Journal of Fish Biology, in press
Etmopterus westraliensis, a new species of lanternshark (Squaliformes: Etmopteridae) from Western Australia, with redescription of Etmopterus brachyurus. Journal of Fish Biology, in press
	Types
Etmopterus westraliensis
Holotype: CSIRO: H 2604-01; Paratype: CSIRO: H 2568-01; CSIRO: H 9025-22; CSIRO: H 9025-23; CSIRO: H 822-19; WAM: P.35411–010;
	
Etmopterus westraliensis
Holotype: CSIRO: H 2604-01; Paratype: CSIRO: H 2568-01; CSIRO: H 9025-22; CSIRO: H 9025-23; CSIRO: H 822-19; WAM: P.35411–010;
Description :
Citation: Etmopterus westraliensis Ng, White, Liu & Joung, 2025: In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 10/2025
	Please send your images of "Etmopterus westraliensis" to info@shark-references.com
	 
 
Etmopterus westraliensis Ng, White, Liu & Joung, 2025; Holotype, CSIRO H 2604-01, mature male, 377 mm TL © Shing-Lai Ng
				 
 Etmopterus westraliensis Ng, White, Liu & Joung, 2025; Holotype, CSIRO H 2604-01, mature male, 377 mm TL © Shing-Lai Ng
		Common names
								     West Australian lanternshark
 West Australian lanternshark
			
            				
		 West Australian lanternshark
 West Australian lanternshark
			
            				
		Short Description
Original diagnosis of Ng, White, Liu & Joung, 2025 [34933]: A medium-sized lanternshark species attaining 407 mm TL and being a member of the E. lucifer group, differing from the other members by having a combination of hook-like denticles, dorsal fins covered with denticles (except in juveniles), the origin of the flank-marking base well anterior to the second dorsal-fin origin, underside of snout with a reversed ‘W’-shaped naked area, the length of the ventral portion of caudal-base marking much longer than its width, and caudal-base marking 9.5%–10.0% TL, its tip tapering.
		Original diagnosis of Ng, White, Liu & Joung, 2025 [34933]: A medium-sized lanternshark species attaining 407 mm TL and being a member of the E. lucifer group, differing from the other members by having a combination of hook-like denticles, dorsal fins covered with denticles (except in juveniles), the origin of the flank-marking base well anterior to the second dorsal-fin origin, underside of snout with a reversed ‘W’-shaped naked area, the length of the ventral portion of caudal-base marking much longer than its width, and caudal-base marking 9.5%–10.0% TL, its tip tapering.
		Distribution
Known only from Western Australia, from off Ledge Point north to off the Exmouth Peninsula [34933]
		Known only from Western Australia, from off Ledge Point north to off the Exmouth Peninsula [34933]
		Size / Weight / Age
TL (max): 407 mm TL (paratype)
		TL (max): 407 mm TL (paratype)
		Dentition
Teeth dissimilar in upper and lower jaw, with strong ontogenetic and sexual dimorphism; upper teeth multicuspid, juveniles having one cusplet on each side of the cusp, whereas the female paratype having two, and the two mature males having three to five; inner pairs of cusplets of mature males often reduced; upper teeth in three functional series, in lower jaw unicuspid, in three series, one functional; lower teeth blade-like, with strongly oblique cusp, not erected in mature individuals. No distinctive symphyseal and intermediate teeth. Tooth count for the paratype (CSIRO H 9052–22): upper jaw 30, lower jaw 36, total count 66. [34933]
		Teeth dissimilar in upper and lower jaw, with strong ontogenetic and sexual dimorphism; upper teeth multicuspid, juveniles having one cusplet on each side of the cusp, whereas the female paratype having two, and the two mature males having three to five; inner pairs of cusplets of mature males often reduced; upper teeth in three functional series, in lower jaw unicuspid, in three series, one functional; lower teeth blade-like, with strongly oblique cusp, not erected in mature individuals. No distinctive symphyseal and intermediate teeth. Tooth count for the paratype (CSIRO H 9052–22): upper jaw 30, lower jaw 36, total count 66. [34933]
		Remarks
shark-references Species-ID=17698;
		shark-references Species-ID=17698;
 
				 
				 
    					 
    					 
    					 
    					 
                         
    					 Catalog of Fishes
 Catalog of Fishes
			 literature references
 literature references
			 FishBase
 FishBase
			 NCBI GenBank
 NCBI GenBank
         
		








