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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 / distribuzione batimetrica / distribution range					
						Ecologia					
				
				
				
					marino pelagic-oceanic; oceanodromo (Ref. 51243);  distribuzione batimetrica 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 / Peso / Age
				
				
				
					Maturità: Lm ?  range ? - ? cm
 Max length : 76.0 cm TL maschio/sesso non determinato; (Ref. 2850)				
				 
			
			
						
				
				
				
					Spine dorsali (totale) : 0; Raggi dorsali molli (totale) : 32 - 38; Spine anali: 0; Raggi anali molli: 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					
					Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve				
				
				
				
								
				
			
			 
				
				
				
					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  				
				
				
									
				
				
			
			
						
			
			
			
				
Strumenti
				
			
			
			
				
Special reports
 
				
			
			
			
				
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					Estimates based on models				
				
				
				Preferred temperature (Fonte Biblio. 
123201): 20.9 - 29.1, mean 26.9 °C (based on 39944 cells).
				
				
					
					Phylogenetic diversity index  (Fonte Biblio. 
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).
					
					Trophic level  (Fonte Biblio. 
69278):  3.6   ±0.5 se; based on size and trophs of closest relatives					
											
				
				
										
						Resilienza  (Fonte Biblio. 
120179):  Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (Assuming Fec < 10,000).					
											
				
									
					Fishing Vulnerability  (Ref. 
59153):  Moderate to high vulnerability (50 of 100). 
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