Teleostei (teleosts) > 
Perciformes/Scorpaenoidei (Scorpionfishes) > 
Sebastidae (Rockfishes, rockcods and thornyheads) > Sebastinae						
							
							Etymology: Helicolenus: Greek, helike, -es = spiral + Greek, lenos, -ou = cavity (Ref. 45335).
Eponymy: Ernest Amédée Barthélemy Mouchez (1821–1892) was born in Spain, but made his career in the French Navy. [...] (Ref. 128868), visit book page.
More on author: Sauvage.						
					
				
					Environment: milieu / climate zone / depth range / distribution range					
						Ecology					
				
				
				
					Marine;  bathydemersal; depth range 400 - 978 m (Ref. 50308). Temperate; 15°S -   53°S, 13°W -   78°E				
				 
			
			
			
				
				
				
					Southeast Atlantic:  Gough Island and Tristan da Cunha.  Western Indian Ocean:  St. Paul and Amsterdam islands.  May occur at Walter's Shoals (Ref. 32000).
				
				 
			
			
				
					Size / Weight / Age
				
				
				
					Maturity: Lm ?  range ? - ? cm
 Max length : 29.1 cm SL male/unsexed; (Ref. 4517)				
				 
			
			
			
			
			
			
			
			
							
			
			
			
			
				
					Life cycle and mating behavior					
					Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae				
				
				
				
								
				
			
			 
				
				
				
					Collette, B.B. and N.V. Parin, 1991. Shallow-water fishes of Walters Shoals, Madagascar Ridge. Bull. Mar. Sci. 48(1):1-22. (Ref. 32000)
				
				 
			
			
			
							
					
						IUCN Red List Status   (Ref. 130435: Version 2025-1)
					
					
				 
					
			
			
			
			
			
			
			
				
					Threat to humans  
				
				
				
					  Harmless				
				
			 
			
			
			
			
				
					Human uses  				
				
				
					Fisheries: commercial				
				
				
			
			
						
			
			
			
				
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					Estimates based on models				
				
				
				Preferred temperature (Ref. 
123201): 1.4 - 2.9, mean 2.2 °C (based on 39 cells).
				
				
					
					Phylogenetic diversity index  (Ref. 
82804):  PD
50 = 0.5020   [Uniqueness, from 0.5 = low to 2.0 = high].					
													Bayesian length-weight: a=0.01047 (0.00506 - 0.02166), b=3.09 (2.92 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 
93245).
					
					Trophic level  (Ref. 
69278):  3.8   ±0.5 se; based on size and trophs of closest relatives					
											
				
				
										
						Resilience  (Ref. 
120179):  Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.).					
											
				
									
					Fishing Vulnerability  (Ref. 
59153):  Low to moderate vulnerability (26 of 100). 
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