Teleostei (teleosts) > 
Stomiiformes (Lightfishes and dragonfishes) > 
Sternoptychidae (Marine hatchetfishes) > Sternoptychinae						
							
							Etymology: Polyipnus: Greek, poly = a lot of + Greek, ipnos = lanterns.
Eponymy: These fish are named after the German research vessel ‘Meteor’, from which the holotypes were collected. (Ref. 128868), visit book page.
						
					
				
					Environment: milieu / climate zone / depth range / distribution range					
						Ecology					
				
				
				
					Marine;  bathypelagic; depth range 0 - 1000 m (Ref. 26382). Deep-water				
				 
			
			
			
				
				
				
					Indo-Pacific:  off Madagascar to Line Islands.
				
				
			
			
				
					Size / Weight / Age
				
				
				
					Maturity: Lm ?  range ? - ? cm
 Max length : 5.5 cm SL male/unsexed; (Ref. 26382)				
				 
			
			
			
			
			
			
			
			
							
			
			
			
			
				
					Life cycle and mating behavior					
					Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae				
				
				
				
								
				
			
			 
				
				
				
					Harold, A.S., 1994. A taxonomic revision of the sternoptychid genus Polyipnus (Teleostei: Stomiiformes) with an analysis of phylogenetic relationships. Bull. Mar. Sci. 54(2):428-534. (Ref. 26382)
				
				 
			
			
			
							
					
						IUCN Red List Status   (Ref. 130435: Version 2025-1)
					
					
				 
					
			
			
			
			
			
			
			
				
					Threat to humans  
				
				
				
					  Harmless				
				
			 
			
			
			
			
				
					Human uses  				
				
				
									
				
				
			
			
						
			
			
			
				
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					Estimates based on models				
				
				
				Preferred temperature (Ref. 
123201): 9.3 - 21.6, mean 13.9 °C (based on 386 cells).
				
				
					
					Phylogenetic diversity index  (Ref. 
82804):  PD
50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].					
													Bayesian length-weight: a=0.02291 (0.01031 - 0.05092), b=2.94 (2.74 - 3.14), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 
93245).
					
					Trophic level  (Ref. 
69278):  3.2   ±0.3 se; based on size and trophs of closest relatives					
											
				
				
										
						Resilience  (Ref. 
120179):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).					
											
				
									
					Fishing Vulnerability  (Ref. 
59153):  Low vulnerability (10 of 100). 
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