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Carangiformes (Jacks) > 
Echeneidae (Remoras)						
							
							Etymology: Phtheirichthys: Greek, ptheiros, a fish that parasites other + Greek, ichthys = fish (Ref. 45335).
						
					
				
					Environment: milieu / climate zone / djupintervall / distribution range					
						Ekologi					
				
				
				
					marina pelagic-oceanic; havsvandrande (Ref. 51243);  djupintervall 0 - 5 m (Ref. 86942). Subtropical				
				 
			
			
			
				
				
				
					Worldwide in tropical and subtropical waters.  Western Atlantic:  South Carolina, USA and northern Gulf of Mexico to northern South America (Ref. 7251).  Western Central Pacific:  Guam (Ref. 35720).
				
				 
			
			
				
					Size / Vikt / Age
				
				
				
					Könsmognad: Lm ?  range ? - ? cm
 Max length : 76.0 cm TL hane/ej könsbestämd; (Ref. 2850)				
				 
			
			
						
				
				
				
					Taggstrålar i ryggfenan (totalt) : 0; Mjukstrålar i ryggfenan (totalt) : 32 - 38; Taggstrålar i analfenan: 0; Mjukstrålar i analfenan: 31 - 38. Bluish black above, white below; 3 stripes along sides (upper pale blue, middle black, lower silvery).
Body shape (shape guide): elongated.				
				 
			
			
			
			
			
			
			
				Rare (Ref. 4389), oceanic species.  Most often found attached to barracudas but also to other fishes and sea turtles.  Clings to body of host and also found inside gill chambers.			
			 
			
			
			
				
					Life cycle and mating behavior					
					Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver				
				
				
				
								
				
			
			 
				
				
				
					Heemstra, P.C., 1986. Echeneidae. p. 662-664. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 4389)
				
				 
			
			
			
							
					
						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): 20.9 - 29.1, mean 26.9 °C (based on 39944 cells).
				
				
					
					Phylogenetic diversity index  (Ref. 
82804):  PD
50 = 1.0039   [Uniqueness, from 0.5 = low to 2.0 = high].					
													Bayesian length-weight: a=0.00257 (0.00110 - 0.00600), b=3.17 (2.96 - 3.38), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 
93245).
					
					Trofisk nivå  (Ref. 
69278):  3.6   ±0.5 se; based on size and trophs of closest relatives					
											
				
				
										
						Resiliens  (Ref. 
120179):  Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (Assuming Fec < 10,000).					
											
				
									
					Fishing Vulnerability  (Ref. 
59153):  Moderate to high vulnerability (50 of 100). 
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