Echinoidea | 
Spatangoida | 
Brissidae
			
			
			
				Environment: milieu / climate zone / تغييرات عمق / distribution range				
				
					بوم شناسي				
				
			
			
				وابسته به آب سنگ;  تغييرات عمق 0 - 45 m (مرجع 800).  Tropical			
			
			
				
			
			
			
				Widely distributed in Indo-Pacific, except Arabian Sea.
			
			
			
			
			
				Length at first maturity / Size / Weight / سن
			
			
				بلوغ: Lm ?  range ? - ? cm Max length : 13.0 cm TL جنس نر / بدون خواص جنسي; (مرجع 800)			
			
			
						
			
			
			
			
				
					Occurs in shallow sandy areas at depths of 0 to 45 m.  Found buried under the sand.  Feeds on plants and small invertebrates found between sand particles (Ref. 800).				
			
			
			
			
			
				Life cycle and mating behavior				
					بلوغ | تولید مثل | تخم ریزی | Eggs | Fecundity | Larvae				
			
			
				
					Members of the class Echinoidea are gonochoric.  Fertilization is external.  Brooding is common, eggs are held either on the peristome, around the periproct or deep into the concavities on the petaloids.  Life cycle:  Embryos develop into planktotrophic larvae (echinoplateus) and live for several months before they sink to the bottom using their tube feet to adhere on the ground where they metamorphose into young urchins.				
			
			
			
			
				مآخذ اصلی  				
					مراجع | هماهنگ كننده | همكاران
				
			
			
				Schoppe, S. 2000 A guide to common shallow water sea stars, brittle stars, sea urchins, sea cucumbers and feather stars (echinoderms) of the Philippines. Times Media Private Limited, Singapore. 144 p. (مرجع 800)
			
			
			
			
			
			
			
					
						وضعيت در فهرست قرمز IUCN    
						 (مرجع 130435: Version 2025-1)
					
					
					
				
			
			
			
			
				وضعيت از نظر سايتس   (مرجع 108899)
			
			
				
					Not Evaluated				
			
			
			
			
			
			
				
					Not Evaluated				
			
			
			
			
			
				خطر برای انسان ها  
			
			
				
									
			
			
			
			
			
			
			
			
				استفاده انسانی  
			
			
							
			
			
				 | FishSource | 			
			
			
			
			
			
ابزارها
			
			
			
			
				
					اطلاعات بيشتر				
				
					 Population dynamicsرشد
Max. ages / sizes
Length-weight rel.
Length-length rel.
نوسانات طولی
Mass conversion
فراواني
  Life cycleتولید مثلبلوغFecundityتخم ریزیEggsنمو  تخمLarvae   PhysiologyOxygen consumption
  Human RelatedStamps, coins, misc.
  
			 
			
			
			
				منابع اينترنتي
			
			
			
			
			
				Estimates based on models
			
			
			
									
						Preferred temperature  					
				 (Ref. 
115969): 24.6 - 29, mean 27.7 (based on 784 cells).			
 
			
			
			
			
			
						
							
				
					
						Fishing Vulnerability  					
					
					
						Low vulnerability (10 of 100).					
				
						
						
			
									
						طبقه قيمت  					
					
					Unknown.