Malacostraca | 
Decapoda | 
Portunidae
			
			
			
				Environment: milieu / climate zone / depth range / distribution range				
				
					Ecology				
				
			
			
				Benthic; brackish; depth range 0 - 10 m (Ref. 96667).  Tropical			
			
			
				
			
			
			
				Indo-Pacific.
			
			
			
			
			
				Length at first maturity / Size / Weight / Age
			
			
				Maturity: Lm ?  range ? - ? cm Max length : 8.0 cm CW male/unsexed; (Ref. )			
			
			
							
				
				
					
						Surface of carapace smooth, ridges low but distinct; front with 6 equal-sized, rounded lobes. Color:  dark to olive green overall.					
				
				
						
			
			
			
			
				
					Also caught by nets (Ref. 343).  This species possess toxins but in low toxicities, and are therefore considered as a toxin-free crab (Ref. 130560). Found along the neritic zone (Ref. 97241).  Inhabits shallow non-reef habitat with soft substrates (Ref. 106854), and intertidal mudflats (Ref. 128960).  Estuarine (Ref. 106854).  Prefers areas near mangroves, on mangrove swamps per se (Ref. 8752) or with muddy-rocky substrates (Ref. 343) in intertidal platforms (Ref. 8752).  Also found in reef areas.  A free-living predatory carnivore (Refs. 97241, 128960).  Feeds mainly on slow-moving invertebrates colonizing mangrove swamps; also a scavenger (Ref. 8752).				
			
			
			
			
			
				Life cycle and mating behavior				
					Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae				
			
			
				
					Members of the order Decapoda are mostly gonochoric.  Mating behavior:  Precopulatory courtship ritual is common (through olfactory and tactile cues); usually indirect sperm transfer.				
			
			
			
			
			
				Ng, P.K.L. 1998 Crabs. p. 1045-1155. In K.E. Carpenter and V.H. Niem (eds) FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Volume 2. Cephalopods, crustaceans, holothurians and sharks. Rome, FAO. 1998. pp. 687-1396. (Ref. 343)
			
			
			
			
			
			
			
					
						IUCN Red List Status    
						 (Ref. 130435: Version 2025-1)
					
					
					
				
			
			
			
			
				CITES status   (Ref. 108899)
			
			
				
					Not Evaluated				
			
			
			
			
			
			
				
					Not Evaluated				
			
			
			
			
			
				Threat to humans  
			
			
			
			
			
			
			
			
			
				Human uses  
			
			
				Fisheries: commercial			
			
			
				 | FishSource | Sea Around Us			
			
			
			
			
			
Tools
			
			
			
			
				
					More information				
				
					 Life cycleReproductionMaturityFecunditySpawningEggsEgg developmentLarvae   PhysiologyOxygen consumption
  Human RelatedStamps, coins, misc.
  
			 
			
			
			
				Internet sources
			
			
			
			
			
				Estimates based on models
			
			
			
									
						Preferred temperature  					
				 (Ref. 
115969): 24.3 - 29.3, mean 28.3 (based on 3830 cells).			
 
			
			
			
							
					Resilience  				
				
				
					High, minimum population doubling time less than 15 months (K=1.7).				
			
			
						
							
				
					
						Fishing Vulnerability  					
					
					
						Low vulnerability (10 of 100).					
				
						
						
			
									
						Price category  					
					
					Unknown.			
			
			
				Nutrients  :  Calcium = 109 [35, 184]  mg/100g; Iron = 1.59 [1.21, 1.97]  mg/100g; Protein = 20.2 [19.2, 21.3] %; Omega3 = 0.285 [0.185, 0.386]  g/100g; Selenium = 48.3 [-31.7, 128.3]  μg/100g; VitaminA = 0 μg/100g; Zinc = 1.79 [1.17, 2.40]  mg/100g (wet weight); based on 
nutrient studies.