Local Snails

Discussion in 'ID Needed' started by RiaanP, 2 Mar 2015.

  1. RiaanP

    RiaanP Moderator

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    The Good. The Bad. The Ugly.

    At the reef expo 2013 I did a talk on local snails. It is covering just the most likely snails you could encounter while rock hopping or pool splashing.

    The images are all courtesy of Sea Shells
    But its difficult to navigate through thousands of snails found worldwide. Unless you already got a name.

    Anyway, I will try and give short descriptions where ever I can.

    first a disclaimer.
    I am not an marine biologist. Neither a marine expert. Just lucky to have an Aunt in the snail collection hobby that guided me a lot. Thanks.
     
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  3. RiaanP

    RiaanP Thread Starter Moderator

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    Strombidae
    Herbivore
    Algae
    Detritus

    Very nice snails to get. Be careful, their operculum can cut you.

    Strombus aurisdianae
    [​IMG]

    Strombus decorus
    [​IMG]


    Strombus gibberulus
    [​IMG]
     
    Last edited: 2 Mar 2015
  4. RiaanP

    RiaanP Thread Starter Moderator

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    Trochidae (turbo's)
    Herbivore
    Encrusting algae
    Eel grass
    Detritus

    Diloma sinensis
    [​IMG]
    [​IMG]

    Monodonta australis
    Slight green tint to the shell.
    I've found them not to last long in my system. They die easily. Now I just skip them
    [​IMG]

    Turbo coronatus
    Nice to have, But can grow up to a glofball size.
    [​IMG]
    [​IMG]
     
    Last edited: 2 Mar 2015
  5. zippy

    zippy

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    Just explain the quoted a little better for us please, is this what they all eat or are there specifics based on the snails you have listed?
     
  6. RiaanP

    RiaanP Thread Starter Moderator

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    Stomatella rosacea
    Normally they are hitchhikers into your system. Can multiply easily. Mostly active at night.
    [​IMG]

    Trochus nigropunctatus
    Topshels
    Very nice snail to find.
    They struggle to upright themselves when they fell off a rock.
    So if you see them upside dowm help them quikly before a hermit take them out.
    [​IMG]

    Trochus cariniferus
    Another topshel. Nice color.
    [​IMG]
     
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  7. RiaanP

    RiaanP Thread Starter Moderator

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    The family. OK, some members will prefer certain food over other algae.

    Will get to the baddies later.
     
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  8. RiaanP

    RiaanP Thread Starter Moderator

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    More Trochidae

    Diloma tabularis

    Small little snails. Very good algae eater.
    They fell victim to hermits easily - pity.
    [​IMG]

    Clanculus puniceus
    BEAUTIFUL
    Never found a live one, always just a shell or a hermit in it.
    [​IMG]
     
    Last edited: 2 Mar 2015
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  9. RiaanP

    RiaanP Thread Starter Moderator

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    Cypraeidae Cowries.
    Omnivore
    Algae
    Sponges
    Coral Polyps
    Tunicates
    Other living organisms

    These I'm listing are vegetarian. And only the real small species as others like the tiger should stay in the ocean.
    Pity these snails are mostly active at night.

    Cypraea annulus
    Yellow Ring Cowrie.
    They are small, about 20mm.
    [​IMG]

    Cypraea felina
    Same size about as the Yellow Ring
    [​IMG]

    Cypraea Caputserpentis
    Much bigger, about 40mm. Biggest listed here.
    [​IMG]

    Cypraea vitellus
    [​IMG]
     
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  10. RiaanP

    RiaanP Thread Starter Moderator

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    Neritidae
    Night grazers
    Herbivore
    Algae

    They will lay small white eggs against the glass.
    Active at night.
    They also struggles to get upright when they drop off, Please help them up before a hermit attacks them
    Small hermits like the Yellow Tip likes their shells.

    Nerita albicilla
    Various colors.
    Looks like Andy Capp cap.
    [​IMG]
    [​IMG]
    [​IMG]


    Nerita Textilis
    Leave these. They are bigger.
    Black foot tissue.
    But they just die.
    [​IMG]
     
    Last edited: 2 Mar 2015
  11. RiaanP

    RiaanP Thread Starter Moderator

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    Cerithiidae
    Herbivore
    Algae
    Detritus


    Cerithium citrinum
    Easily confused with Muricidae snails, who are predators.
    But the outer rim of the opening is a lot thinner, almost fragile.
    [​IMG]

    Rhinoclavis sinensis
    [​IMG]
     
  12. Lord_Blackadder

    Lord_Blackadder

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    The only likely Strombus you're gonna find locally is S. mutabilis. Much smaller species and a super algae eater. They even clean hair algae off your seagrass and other macroalgae without damaging them. I got 4 in the Kei last week:

    [​IMG]

    The other larger species only start to become common in Moz. Pretty rare to find live ones this far south (but certainly possible).

    PS. the Clanculus spp and Calliostoma spp. topshells tend to be sponge/coral eaters. Clanculus atricatena is pretty common here live and they're sponge eater IME.

    [​IMG]

    Dactylastele burnupi is also pretty common under rocks here. Used to be in Trochidae but now they're in their own family, Calliostomatidae. Most are coral munchers, and this species wrecks zoanthids:

    [​IMG]
     
  13. RiaanP

    RiaanP Thread Starter Moderator

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    Just some notes.

    Operculum.
    The Strombidae snails got a dagger like operculum. That they use to upright themselves and to defend.

    Trochidae the family are mostly vegetarian. Rather big family and diverse in shape and size.


    Snails I list are mostly from Natal and up more north. Found these snails from Margate Just south of Durban all the way up to St Lucia. Colder water snails as found around the Cape will not be listed.

    When collecting snails, always ensure that the shell you pick up is a snail or a hermit. Or just empty. When I collect I put the hermits and snails in separate buckets. The put the shells in a straight line and check later who moved. In the hermit bucket, any shell up against the side is a snail. I always collect some empty shells for the hermits. Here I try and get the nicer looking empty shells, so when they upgrade their shell, they got a nice colorful shell.
     
    Last edited: 2 Mar 2015
  14. zippy

    zippy

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    please sticky this
     
  15. RiaanP

    RiaanP Thread Starter Moderator

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  16. Lord_Blackadder

    Lord_Blackadder

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    Another cool one that is fairly common here under rocks, Scutus unguis. Basically a keyhole limpet without the keyhole:

    [​IMG]

    Some people say they sometimes nibble coral if they run out of algae, but I've never had any problems. One 3cm snail can clean a 10cm rock of hair algae in about 2 days. Just be careful removing them from the rocks...they grip extremely tightly and if you break their shell they probably won't survive.
     
    Last edited: 2 Mar 2015
  17. RiaanP

    RiaanP Thread Starter Moderator

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    THESE ARE BADDIES!!!

    Ranellidae
    Carnivorous
    Molluscs
    Tube Worms
    Echinoderms
    Ascidians


    Gyrineum pusillum
    [​IMG]

    Cymatium exaratum durbanese
    [​IMG]

    Cymatium grandimaculatum

    [​IMG]
     
  18. RiaanP

    RiaanP Thread Starter Moderator

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    MORE BADDIES!!!

    Muricidae
    Carnivorous
    Molluscs


    Mancinella echinulata

    [​IMG]

    Nassa francolina
    [​IMG]

    Morula granulata
    Small hermits likes these shells. So make sure if you are collecting hermits, that it is a hermit
    [​IMG]

    Purpura panama
    [​IMG]

    Thais capensis
    [​IMG]

    Maculotriton serriale
    [​IMG]
     
    Last edited: 2 Mar 2015
  19. RiaanP

    RiaanP Thread Starter Moderator

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    MORE BADDIES!!!


    Conidae
    Carnivorous
    Reef worms
    Mollusks
    Small Fish

    Just some of the smaller members. Some species in this family can grow rather large. These snails harpoon their victims. And can be venomous.
    Conus ebraeus
    [​IMG]

    Conus namocanus
    [​IMG]

    Conus biliosus
    [​IMG]
     
    Last edited: 2 Mar 2015
  20. RiaanP

    RiaanP Thread Starter Moderator

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    BADDIES


    Fasiolariidae
    Carnivorous
    Mollusks Tube Worms
    Echinoderms
    Ascidians


    Peristernia forskalii
    Can differ in color.
    [​IMG]

    [​IMG]

    Peristernia leucothea
    [​IMG]
     
    Last edited: 2 Mar 2015
  21. RiaanP

    RiaanP Thread Starter Moderator

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    BADDIES

    Bursidae
    Carnivorous
    Worms
    Mollusks

    Bursa granularis
    Rather big, with a thick ridge down each side.
    [​IMG]
     
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