Gastropoda | 
Nudibranchia | 
Hexabranchidae
			
			
			
				Environment: milieu / climate zone / depth range / distribution range				
				
					Ecology				
				
			
			
				Benthic; depth range 1 - 50 m (Ref. 121225), usually 10 - 20 m (Ref. 866).  Tropical; 37°N -   36°S, 30°E -   144°W			
			
			
				
			
			
			
				Indo-Pacific:  from East Africa to Red Sea, east to French Polynesia, north to Japan, and south to Australia and New Caledonia.
			
			
			
			
			
				Length at first maturity / Size / Weight / Age
			
			
				Maturity: Lm ?  range ? - ? cm Max length : 25.0 cm TL male/unsexed; (Ref. 100471)			
			
			
						
			
			
			
			
				
					Maximum length is based on data from Marshall Islands (Ref. 100471). Found in coral reefs at depths of 10 to 20 m (Ref. 866).  Derives a potent chemical defense from Halichondria sp., a sponge that it eats.  It displays a spectacular swimming response - it throws its body into sweeping dorsoventral flexions creating synchronous undulations through its broad and vividly patterned red and white mantle  (Ref. 100471).				
			
			
			
			
			
				Life cycle and mating behavior				
					Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae				
			
			
				
					Eggs are deposited as coiled rosettes on rocks and coral rubble (Ref. 100471).				
			
			
			
			
			
				Gosliner, T. 1987 Nudibranchs of Southern Arfrica: A guide to opistobranch molluscs of Southern Africa. Sea Challengers and Jeff Hamann in association with the California Academy of Sciences. 136 pp. (Ref. 866)
			
			
			
			
			
			
			
					
						IUCN Red List Status    
						 (Ref. 130435: Version 2025-1)
					
					
					
				
			
			
			
			
				CITES status   (Ref. 108899)
			
			
				
					Not Evaluated				
			
			
			
			
			
			
				
					Not Evaluated				
			
			
			
			
			
				Threat to humans  
			
			
				
					  Harmless				
			
			
			
			
			
			
			
			
				Human uses  
			
			
				Fisheries: commercial			
			
			
				 | FishSource | Sea Around Us			
			
			
			
			
			
Tools
			
			
			
			
				
					More information				
				
					 Population dynamicsGrowthMax. ages / sizesLength-weight rel.Length-length rel.Length-frequenciesMass conversionAbundance   PhysiologyOxygen consumption
  Human RelatedStamps, coins, misc.
  
			 
			
			
			
				Internet sources
			
			
			
			
			
				Estimates based on models
			
			
			
									
						Preferred temperature  					
				 (Ref. 
115969): 24.7 - 29.3, mean 28.2 (based on 2479 cells).			
 
			
			
			
			
			
						
							
				
					
						Fishing Vulnerability  					
					
					
						Low vulnerability (15 of 100).					
				
						
						
			
									
						Price category  					
					
					Unknown.			
			
			
				Nutrients  :  Calcium = 126 [75, 177]  mg/100g; Iron = 4.79 [1.67, 7.92]  mg/100g; Protein = 15.9 [14.8, 16.9] %; Omega3 = 0.331 [0.263, 0.400]  g/100g; Selenium = 57.8 [48.5, 67.2]  μg/100g; VitaminA = 0 μg/100g; Zinc = 1.97 [0.92, 3.02]  mg/100g (wet weight); based on 
nutrient studies.