Bivalvia | 
Cardiida | 
Cardiidae
			
			
			
				Environment: milieu / climate zone / depth range / distribution range				
				
					Ecology				
				
			
			
				Benthic.  Tropical; 23°C - 30°C (Ref. 102835); 13°N -   9°S, 109°E -   139°E (Ref. 106696)			
			
			
				
			
			
			
				Western Central Pacific:  Restricted in the tropical western Pacific. From Sabah, Malaysia to Palau, north to Philippines and south to Indonesia.
			
			
			
			
			
				Length at first maturity / Size / Weight / Age
			
			
				Maturity: Lm ?  range ? - ? cm Max length : 41.1 cm SHL male/unsexed; (Ref. 117184); common length : 20.0 cm SHL male/unsexed; (Ref. 348)			
			
			
							
				
				
					
						Its shell is thinner and smoother than that of H. hippopus, usually devoid of pigmentation, and more semi-circular in profile.  The mantle is similar to that of H. hippopus  (Rosewater, 1982), except that prominent papillae line the margins of the incurrent siphon.					
				
				
						
			
			
			
			
				
					Collected for food and shell (Ref. 348). Found in shallow waters.  Young specimens often byssally attached to coral heads, mature specimens lack a byssus and lay unattached on the substrate (Ref. 348).				
			
			
			
			
			
				Life cycle and mating behavior				
					Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae				
			
			
				
					Broadcast spawners.  Life cycle:  Embryos develop into free-swimming trocophore larvae, succeeded by the bivalve veliger, resembling a miniature clam (Ref. 833).				
			
			
			
			
			
				Poutiers, J.M. 1998 Bivalves. Acephala, Lamellibranchia, Pelecypoda. p. 123-362. In Carpenter, K. E. and V. H. Niem. 1998. FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Volume 1. Seaweeds, corals, bivalves, and gastropods. Rome, FAO. (Ref. 348)
			
			
			
			
			
			
			
					
						IUCN Red List Status    
						 (Ref. 130435: Version 2025-1)
					
					
					
				
			
			
			
			
				CITES status   (Ref. 108899)
			
			
			
			
			
			
			
				
					Not Evaluated				
			
			
			
			
			
				Threat to humans  
			
			
				
					  Harmless				
			
			
			
			
			
			
			
			
				Human uses  
			
			
				Fisheries: commercial			
			
			
				FAO - Aquaculture: production;  | FishSource | Sea Around Us			
			
			
			
			
			
Tools
			
			
			
			
				
					More information				
				
					 Life cycleReproductionMaturityFecunditySpawningEggsEgg developmentLarvae   PhysiologyOxygen consumption
  Human RelatedStamps, coins, misc.
  
			 
			
			
			
				Internet sources
			
			
			
			
			
				Estimates based on models
			
			
			
							
			
			
			
							
					Resilience  				
				
				
					Low, minimum population doubling time 4.5 - 14 years (K=0.13).				
			
			
						
							
				
					
						Fishing Vulnerability  					
					
					
						Moderate to high vulnerability (51 of 100).					
				
						
						
			
									
						Price category  					
					
					Unknown.