Malacostraca | 
Decapoda | 
Upogebiidae
			
			
			
				Environment: milieu / climate zone / depth range / distribution range				
				
					Ecology				
				
			
			
				Benthic; brackish.  Subtropical; 48°N -   30°N, 117°E -   153°E (Ref. 4)			
			
			
				
			
			
			
				Northwest Pacific:  S.E. coast of Siberia, USSR, from Olga Bay southward, Korea, N. China, Kuril Islands, Japan.
			
			
			
			
			
				Length at first maturity / Size / Weight / Age
			
			
				Maturity: Lm ?  range ? - ? cm Max length : 9.5 cm BL male/unsexed; (Ref. 4)			
			
			
							
				
				
					
						Rostrum ending in 3 teeth, the lateral at the end of a ridge that is separated from the central part of the rostrum by a deep groove; a shallow median longitudinal groove is present in the central part.  The lower surface of the rostrum has no spines.  Anterolateral border of carapace with a single spine at the level of the eye.  First pereiopods subchelate.  Dactylus of adult male with 9 to 11 oblique ridges on the outer surface, and with a low tooth in the proximal half of the cutting edge.  Two denticulate ridges  on the upper surface of the palm.  Merus of the first pereiopod with a distinct subdistal anterodorsal spine; coxa of that leg with a spine (Ref. 4).					
				
				
						
			
			
			
			
				
					It has a maximum total body length of 9.5 cm (Ref. 4). It is found in tidal mud flats and it makes Y-shaped burrows in the mud and are filter feeders (Ref. 4).				
			
			
			
			
			
				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.  				
			
			
			
			
			
				Holthuis, L.B. 1991 FAO Species Catalogue. Vol. 13. Marine lobsters of the world. An annotated and illustrated catalogue of species of interest to fisheries known to date. FAO Fish. Synop. 125(13):292p. Rome: FAO. (Ref. 4)
			
			
			
			
			
			
			
					
						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 | 			
			
			
			
			
			
Tools
			
			
			
			
				
					More information				
				
					 Trophic EcologyFood items (preys)Diet compositionFood consumptionPredators   Population dynamicsGrowthMax. ages / sizesLength-weight rel.Length-length rel.Length-frequenciesMass conversionAbundance   Life cycleReproductionMaturityFecunditySpawningEggsEgg developmentLarvae   PhysiologyOxygen consumption
  Human RelatedStamps, coins, misc.
  
			 
			
			
			
				Internet sources
			
			
			
			
			
				Estimates based on models
			
			
			
							
			
			
			
			
			
						
							
				
					
						Fishing Vulnerability  					
					
					
						Low vulnerability (23 of 100).					
				
						
						
			
									
						Price category  					
					
					Unknown.