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            | Venus 
            clams Family Veneridae
 updated 
            May 2020
 
 
              
                | if you 
                  learn only 3 things about them ... 
 
                    
                      |  Many venus clam species are edible. 
  However, don't eat wild clams as some may make you ill. 
  They 
                        are eaten by snails that bore a hole in their shell. See 
                        if you can find such a shell? |  |  Where seen? Another seafood favourite, in Singapore, these clams are also called 
            'la-la'. Venus clams are still commonly seen on some of our shores, 
            in sandy and rocky areas near seagrasses and coral rubble.
 
 What are venus clams? Venus clams belong to the Family Veneridae. There are more than 400 
            known species in this family with some of the most colourful of bivalves. 
            Many are edible.
 
 Features: 3-4cm. The two-part 
            shells are thick. Some have ridges or various patterns. They are usually 
            buried just beneath the surface. The fine ridges on their shells to 
            help them stay buried.
 
 What eats them? Despite their thick hard shells they are still preyed upon by predators 
            such as moon snails, drills, crabs 
            and shorebirds. Of course humans love to eat them too.
 
 What do they eat? Like many other 
            bivalves, venus clams are filter feeders. They lie buried in the sand 
            and extend their siphons to the surface at high tide. They use their 
            siphons to suck in water and filter out microscopic food. The water 
            also brings fresh oxygen to the animal.
            Clams in this and related families, have a 
            folded gill structure that is well developed for filtering out tiny 
            food particles. The Gladys Archerd Shell Collection website has a drawing 
            of this complex filter.
 
 |  
        
          |  Venus clams being harvested.
 Pulau Sekudu, Jul 03
 |  Half buried under a stone.
 Chek Jawa, Sep 02
 |  Siphon sticking out.
 Changi, Feb 02
 |  
        
          
            | Human uses: Many of the commercially 
            important clams are venus clams. Some are also used as fish bait. 
            Venus clams are among the favourite seafood of people everywhere. 
            Like other filter-feeding clams, however, venus clams may be affected 
            by red tide and other 
            harmful algal blooms. Such clams can then be harmful to eat. 
 Status and threats: None of our 
            venus clams are listed among the threatened animals of Singapore. 
            However, like other creatures of the intertidal zone, they are affected 
            by human activities such as reclamation and pollution. Trampling by 
            careless visitors and over-collection can also affect local populations 
            of young clams.
 |  
 
        
          
            | Some Venus 
      clams on Singapore shores |  
 
 
 
        
          
            | Unidentified 
              venus clams on Singapore shores |  
 
         
          | Family 
            Veneridae recorded for Singapore from Tan Siong 
            Kiat and Henrietta P. M. Woo, 2010 Preliminary Checklist of The 
            Molluscs of Singapore.
 ^from WORMS
 +Other additions (Singapore Biodiversity Record, etc)
 
 
 
               
                |  | Venus 
                  clams seen awaiting identification Species 
                  are difficult to positively identify without close examination.
 On this website, they are grouped 
                  by external features for convenience of display.
 |  
 
               
                |  | Anomalocardia 
                    squamosaAnomalocardia malonei
 
 +Antigona chemnitzii
 Antigona lamellaris
 
 Bassina foliacea
 
 Callista chinensis
 
 Circe scripta (Script venus 
                    clam)
 Circe tumefacta
 Circe undatina
 
 Clementia papyracea
 
 Dosinia cretacea
 Dosinia exasperata
 Dosinia juvenilis
 Dosinia laminata
 Dosinia trigona=^Costellipitar madecassinus
 
 Gafrarium dispar (Discrepant venus clam)
 Gafrarium divaricatum (Forked 
                    venus clam)
 Gafrarium pectinatum
 Gafrarium tumidum=^Gafrarium pectinatum (Tumid venus clam)
 
 Globivenus toreuma=Venus toreum
 
 +Hyphantosoma intricatum
 
 Irus irus=Venerupis chinensis (Long-leaf irus clam)
 
 +Lioconcha sowerbyi (Sowerby’s venus clam)
 
 Marcia hiantina
 Marcia flammea
 Marcia japonica
 + Marcia recens
 
 Meretrix lusoria
 +Meretrix lyrata                    (Lyrate Asiatic hard clam)
 Meretrix meretrix (Meretrix venus clam)
 
 Paphia 
                    alapapilionis=^Paphia rotundata (Butterfly venus clam)
 Paphia sinuosa
 Paphia textile (Textile venus clam)
 Paphia undulata (Undulating venus clam)
 
 +Paratapes undulatus
 
 Periglypta ata
 Periglypta crispata
 Periglypta puerpera (Youthful venus clam)
 
 Pitar affinis
 Pitar belcheri
 Pitar citrinus
 Pitar deshayesi
 +Pitar lineolatus
 Pitar marrowae
 Pitar striata
 
 Placamen calophyllum
 Placamen chloroticum
 Placamen isabellina
 +Placamen lamellatum
 
 Protapes gallus=Paphia gallus
 
 Ruditapes philippinarum
 Ruditapes variegatus
 
 Tapes belcheri
 Tapes literatus
 
 Timoclea arakana
 Timoclea chuangi
 Timoclea decorata
 Timoclea lionota
 
 |  |  
 
         
          | Acknowledgements With grateful thanks to Andre Sartori from eBivalvia 
            on EOL's Life Desk for identifying some of the Venus clams.
 
 Links 
            
            References
 
               Chan Sow-Yan & Lau Wing Lup. 30 April 2020. Sightings of the long-leaf irus clam, Irus irus, in Singapore. Singapore Biodiversity Records 2020: 49-52 ISSN 2345-7597Tan Siong Kiat, Chan Sow-Yan & Lau Wing Lup. 31 October 2019. Sowerby’s venus clam, Lioconcha sowerbyi, a new record for Singapore, Singapore Biodiversity Records 2019: 118-119 ISSN 2345-7597.Tan Siong Kiat and Chan Sow-Yan. 31 Oct 2017. First Singapore record of Venus clam, Pitar lineolatus. Singapore Biodiversity Records 2017: 142Tan Siong Kiat. 31 Aug 2017. Lyrate Asiatic hard clam, Meretrix lyrata, at Changi coast. Singapore Biodiversity Records 2017: 142 Tan Siong Kiat. 31 Aug 2017. Two species of venus clams new to Singapore: , Antigona chemnitzii and Hyphantosoma intricatum. Singapore Biodiversity Records 2017: 114-115.                Tan Siong 
                Kiat and Henrietta P. M. Woo, 2010 Preliminary 
                  Checklist of The Molluscs of Singapore (pdf), Raffles 
                Museum of Biodiversity Research, National University of Singapore.Tan, K. S. 
                & L. M. Chou, 2000. A 
                Guide to the Common Seashells of Singapore. Singapore 
                Science Centre. 160 pp.Wee Y.C. 
                and Peter K. L. Ng. 1994. A First Look at Biodiversity in Singapore. 
                National Council on the Environment. 163pp.Ng, P. K. 
                L. & Y. C. Wee, 1994. The 
                Singapore Red Data Book: Threatened Plants and Animals of Singapore . 
                The Nature Society (Singapore), Singapore. 343 pp. |  |  |