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You are here: Home / Invertebrates / Snails / The Cerith Snail: A ‘Must-Have’ Cleaner
Someone Holding a Cerith Snail

The Cerith Snail: A ‘Must-Have’ Cleaner

by Kenneth Wingerter

The Cerith Snail up closeMost aquarists are already aware that snails eat algae. To be most correct, the majority of snail species are algivores. To be sure, some have extremely specialized diets that do not include algae; other snails are technically omnivores, eating all sorts of things including algae. Then, for marine aquarists in particular, there is the issue of algae specialization; certain species of snail eat only certain types of algae. After you start running a tank and have to go snail shopping to add to your clean-up crew (CUC) for one thing or another, it might feel as though you need a freaking degree in malacology just to be sure that you’re actually getting the “right kind.” This certainly makes any truly omnivorous, unfinicky and voracious snail genera such as the cerith snail (Cerithium spp.) extremely attractive in the marine aquarium hobby. Its willingness to consume almost any sort of algae or organic waste, as well as its general hardiness, would indeed make it an excellent candidate for the first line of defense in any CUC.

An easy first choice

One hugely nice thing about cerith snails is that because they exploit multiple types of food sources, they cannot starve to death after they have depleted one source. If, over time, it seems that the ceriths cannot alone tackle one type of cleaning, then you can simply add a few specimens of a more specialized species to finish the job. For example, if there is a persistent film of algae over the higher parts of the tank panel, you can supplement your CUC (in a targeted manner) with the addition of a few trochus snails. In this respect, ceriths are a good “starter snail.” You can start with these little guys and then fine-tune your CUC as necessary down the road!

Another nice thing about these snails is their small size. Sure, their smallness (as well as their hardiness) make it easy to ship relatively large numbers of them safely; this helps to keep their price down, which all aquarists certainly appreciate. But their tiny adult bodies and shells have additional benefits as cleaners. For one, it means that they won’t bulldoze your rocks, knocking over little frags and other small items. Even more importantly, it means that they can clean the tightest little holes and crannies (okay, maybe not the tiniest, but that’s what your pods are for!). Finally, this also means that when they die they leave behind a comparatively smaller mess than larger snails such as Turbo spp.

So, what is it about these snails that makes them so well-adapted to life in captivity? The whole family (Cerithiidae) has been quite successful since at least the Triassic period, inhabiting shallow sea floors. These are rarely stable environments. Ceriths almost always occur on soft bottoms (sandy or muddy flats), including sandy/muddy rubble zones, macroalgal beds, mangrove forests and seagrass meadows, just below the lowest low-tide. They are found in both tropical and temperate waters.

The cerith shell rarely exceeds an inch in length. It is long with a sharp tip (i.e. spire). The shell is whorled in a radial manner. The whorls are highly textured with tiny bumps and ridges. The animal is protected by a thin, brown, round covering (operculum) that effectively seals the shell’s opening (aperture). The slender shape of the shell makes it easier for the animal to burrow through soft substrates.

Aquarium care/use of cerith snails

While they are surprisingly tough (especially compared to many other aquarium snails), ceriths should be acclimated to a new tank (like most mollusks) in a slow, gentle and unhurried manner. After that, there isn’t much to worry about!

As they are strongly nocturnal in habit, you might not see much activity by your ceriths while the lights are on. However, as soon as darkness falls, these little creatures break out in dramatic fashion (dramatic for snails, anyway). At night, they emerge from the sand and rocky caves into the open to feast on anything from nuisance algae to detritus and uneaten fish food. A common observation is that for such a small animal, the cerith snail has a ridiculously huge appetite.

AlgaeBarn Cerith Snails for SaleThe cerith is special as a CUC animal for a couple of reasons. First, as it plows through the sand bed in search of settled particulate organic waste to eat, it stirs up the upper layer of the substrate, keeping it looking sparkly clean. Second, because it has the rare dual characteristics of an herbivore and a burrower, it is one of very few CUC creatures that will eat algae growing on the glass below the sand line.

Best of all, even though it has such a highly varied diet, the cerith snail is 100% reef-safe. It’s pretty hard to imagine how Nature could have created a better CUC snail for the reef aquarium. Hardy, harmless and extremely effective against nearly all forms of tank fouling, this should be a primary component of your CUC from the very beginning!

 

Reader Interactions

Comments

  1. pumas0511 says

    October 1, 2020 at 9:16 am

    Great article.

    Reply
    • Lonnie Goldman says

      October 5, 2020 at 4:27 pm

      I have a few

      Reply
      • Regina Heitschmidt says

        October 19, 2020 at 1:49 pm

        How do you like them?

        Reply
      • Deborah Ramsey says

        October 19, 2020 at 1:59 pm

        Good thing I stay up late so I can see him eat a lot of algae and help my tank!

        Reply
    • Paulrsuperwiibro says

      October 5, 2020 at 6:14 pm

      indeed

      Reply
      • Joe Gajda says

        October 24, 2020 at 6:57 pm

        My favorite snail!

        Reply
    • Len Fesi says

      October 10, 2020 at 7:51 am

      Great article.

      Reply
    • tony_garcia18 says

      October 10, 2020 at 8:56 am

      Agreed! Always learn a lot

      Reply
    • Stefanie Czaplinski-Martin says

      October 11, 2020 at 4:08 pm

      Something ate mine and I need to order more

      Reply
    • gerardobarbaro says

      October 12, 2020 at 8:19 pm

      Great part of the clean up crew, algae what algae.

      Reply
    • Victoria Joy Brewer says

      October 13, 2020 at 1:44 pm

      Great snail and captive breed is always a good thing.

      Reply
    • Regina Heitschmidt says

      October 19, 2020 at 1:48 pm

      Agreed! I had never heard of them before! I will be looking into getting one myself.

      Reply
  2. mlashawnbenton says

    October 1, 2020 at 10:47 am

    never had any, heard they do a great job though.

    Reply
  3. Chris says

    October 1, 2020 at 11:27 am

    Great for cleaning all the small areas of the marine tank great addition

    Reply
  4. cnawn says

    October 1, 2020 at 2:29 pm

    I forget – can Cerith snails flip themselves?

    Reply
  5. Steven A Manseau says

    October 1, 2020 at 2:59 pm

    These guys are awesome cleaners

    Reply
  6. kweisen says

    October 1, 2020 at 4:06 pm

    Very good article. Shod probably have gotten more.

    Reply
    • randles.17 says

      October 14, 2020 at 6:11 pm

      I agree. Great information

      Reply
    • Mark Clark says

      October 19, 2020 at 5:17 pm

      The best addition to any tank, the only issue is they can’t turn themselves back over.

      Reply
  7. kweisen-1082 says

    October 1, 2020 at 4:17 pm

    Great article. I should get more.

    Reply
  8. Molvera18 says

    October 1, 2020 at 4:24 pm

    One of the must haves of a cuc!

    Reply
  9. adam.woods144 says

    October 1, 2020 at 5:00 pm

    Under rated snail especially the mini ones

    Reply
  10. angelyrojas23 says

    October 1, 2020 at 5:05 pm

    The heart of the tank

    Reply
  11. Jacob says

    October 1, 2020 at 5:42 pm

    Love snails!!!

    Reply
  12. Tracy B Schultz says

    October 1, 2020 at 7:54 pm

    Awesomeness

    Reply
  13. Robert says

    October 1, 2020 at 8:19 pm

    awesome!!

    Reply
  14. Joe Camejo says

    October 2, 2020 at 7:00 am

    A must for your CUC

    Reply
  15. jose.caraveo1 says

    October 2, 2020 at 7:46 am

    Great article

    Reply
    • michaelohl says

      October 6, 2020 at 2:26 pm

      An all around great cuc member with a wide variety of tastes.

      Reply
  16. gandla nagaraviteja says

    October 2, 2020 at 9:09 am

    I did not know about this snail till now. I m am ordering it now. Thanks. Great article

    Reply
  17. Juan Carlos Perez says

    October 2, 2020 at 12:53 pm

    Bought 10 just last week

    Reply
  18. michaelbotzenmayer says

    October 2, 2020 at 3:38 pm

    Super Hardy

    Reply
  19. Jordn Gerardot says

    October 2, 2020 at 5:28 pm

    Awesome as usual ?

    Reply
  20. Dallas Tippie says

    October 2, 2020 at 11:34 pm

    Cerith are excellent CUC members!

    Reply
  21. jeffery486 says

    October 3, 2020 at 4:56 am

    Core component to a CUC and the tank

    Reply
  22. TiNa Hess says

    October 3, 2020 at 5:47 am

    Great cleanup crew!

    Reply
  23. Jorge Cabrera says

    October 3, 2020 at 6:57 am

    Great clean up crew

    Reply
  24. Lonnie C Goldman says

    October 3, 2020 at 8:06 am

    They’re the best!

    Reply
  25. emailme says

    October 3, 2020 at 8:11 am

    Would never have a tank without snails.

    Reply
  26. Justin Hodnett says

    October 3, 2020 at 7:12 pm

    Love these guys in my tanks.

    Reply
  27. Ricardo says

    October 3, 2020 at 9:58 pm

    they will be my next buy.

    Reply
  28. zadok says

    October 3, 2020 at 10:30 pm

    These are now a much add to my tank! thanks for the info!

    Reply
  29. chidibang316 says

    October 4, 2020 at 1:40 am

    Love the shells on these guys great addition

    Reply
  30. jayfl77 says

    October 4, 2020 at 4:38 am

    Good to have

    Reply
  31. dcreeron says

    October 4, 2020 at 11:11 am

    Ceriths for everyone!

    Reply
  32. tyler.powell says

    October 4, 2020 at 1:39 pm

    Very useful little critters

    Reply
  33. Brett says

    October 4, 2020 at 2:06 pm

    Work horses!

    Reply
  34. Jesse says

    October 4, 2020 at 6:56 pm

    Can never have enough of these guys!

    Reply
  35. Chell Slayton says

    October 5, 2020 at 10:31 am

    Super CUC, especially for crab less tanks.

    Reply
  36. John Hernandez says

    October 5, 2020 at 3:43 pm

    One of the hardest workers.

    Reply
  37. Lonnie Goldman says

    October 5, 2020 at 4:27 pm

    I have a few

    Reply
  38. gbrag64 says

    October 5, 2020 at 4:36 pm

    Great to have in a tank

    Reply
  39. Mr Papu says

    October 5, 2020 at 4:46 pm

    Great read

    Reply
  40. Tony Mangano says

    October 5, 2020 at 5:41 pm

    Great snails!

    Reply
  41. Bob Escher says

    October 5, 2020 at 6:18 pm

    I keep them

    Reply
  42. Liberty Klug says

    October 5, 2020 at 6:50 pm

    Can never have too many!!

    Reply
  43. Kevin says

    October 5, 2020 at 7:01 pm

    These guys get everywhere in the tank!

    Reply
  44. kmehl says

    October 5, 2020 at 7:03 pm

    Good

    Reply
  45. John Graves says

    October 5, 2020 at 7:49 pm

    Love ceriths, both large and dwarf. Awesome part of CUC.

    Reply
  46. Jorge Cabrera says

    October 5, 2020 at 7:57 pm

    Very interesting article

    Reply
  47. motor795 says

    October 5, 2020 at 10:21 pm

    I have a lot in mine?‍♂️ I love them and reproduce easily

    Reply
  48. Derek Nguyen says

    October 6, 2020 at 12:12 am

    Clean up on reef aisle please!

    Reply
  49. Bobby Daniels says

    October 6, 2020 at 4:35 am

    Wouldn’t have a tank wo them

    Reply
  50. Mike Hudson says

    October 6, 2020 at 7:28 am

    They are very Hardy, and will reproduce easily. Great Cleaners for your saltwater tank..!! Id recommend them to any one!

    Reply
  51. Elizabeth Nitz says

    October 6, 2020 at 1:55 pm

    Great info, great snails!

    Reply
  52. Ken Bilow says

    October 7, 2020 at 4:51 am

    I have a bunch in my tanks

    Reply
  53. maxbears34 says

    October 7, 2020 at 3:44 pm

    Cerriths are great, but they’re no trochus.

    Reply
  54. Larry says

    October 7, 2020 at 4:40 pm

    Must have snails

    Reply
  55. Shawn Vest says

    October 7, 2020 at 5:31 pm

    Totally agreed a must have in every reef

    Reply
  56. Gabe says

    October 8, 2020 at 8:06 am

    And they reproduce easily in the tank too!

    Reply
  57. Elizabeth Dusser says

    October 8, 2020 at 7:34 pm

    They’re great snails

    Reply
  58. Christopher skates says

    October 8, 2020 at 10:47 pm

    I just found out about there and I want some so bad!!

    Reply
  59. Casey says

    October 9, 2020 at 12:48 pm

    Just now learned Algae Barns sells Inverts how amazing is that! I will be ordering a cerith snails soon

    Reply
  60. jason says

    October 9, 2020 at 7:50 pm

    i like that they can get into small areas that larger snails cant.

    Reply
  61. Robert Paniagua says

    October 9, 2020 at 9:08 pm

    Mine always die

    Reply
  62. Andrew Welsh Welsh says

    October 9, 2020 at 9:11 pm

    Cerith are one of my favorite snails.

    Reply
  63. justan jenkins says

    October 9, 2020 at 10:02 pm

    nice.. any recommendations for freshwater snails?

    Reply
  64. Steve says

    October 10, 2020 at 5:37 am

    Great clean up crew

    Reply
  65. s_coffman says

    October 10, 2020 at 1:35 pm

    Good read, I was concerned if they ran out of a particular food if they would move to your corals. But you cleared that up.

    Reply
  66. Sophia says

    October 10, 2020 at 5:07 pm

    They are very good sand sifters!

    Reply
  67. mstrait44 says

    October 10, 2020 at 6:56 pm

    Incredible!

    Reply
  68. Roberto Castro says

    October 10, 2020 at 8:03 pm

    Great article

    Reply
  69. bellboy63055 says

    October 10, 2020 at 11:05 pm

    Great cleaners

    Reply
  70. Robert Bowers says

    October 11, 2020 at 6:35 am

    Every tank needs at least a few

    Reply
  71. Chad Whitmire says

    October 12, 2020 at 4:32 am

    These little critters get the job done.

    Reply
  72. ajlop270 says

    October 12, 2020 at 4:29 pm

    awsome

    Reply
  73. Jorge Cabrera says

    October 12, 2020 at 5:09 pm

    Very informative, thank you.

    Reply
  74. Mike says

    October 12, 2020 at 7:55 pm

    Definatley a must for any CUC! Like it says they are costco food samplers, but that also gives the varied nutrition i believe, they always seem to sustain the longest.

    Reply
  75. Andrew says

    October 12, 2020 at 10:48 pm

    A very good hardy snail for all reef tanks!

    Reply
  76. Bob Trimper says

    October 13, 2020 at 3:37 am

    earns its keep!

    Reply
  77. trevorpem10 says

    October 13, 2020 at 8:39 am

    Hard workers but hard to find at and LFS where I live.

    Reply
  78. purelakerfan says

    October 13, 2020 at 3:05 pm

    I have some Cerith Snails in my tank

    Reply
  79. rpg56185 says

    October 13, 2020 at 3:51 pm

    I need to get some more!

    Reply
  80. jbean_911 says

    October 15, 2020 at 7:18 am

    Great info! I have never used these snails before, but I do like a variety.

    Reply
  81. jbean_911 says

    October 15, 2020 at 7:39 am

    It’s awesome that you guys have all this info for newbies and primed hobbyists!

    Reply
  82. jenniferlye74 says

    October 15, 2020 at 8:39 am

    I’ll have to get myself some of these. Our LFS does not carry them.

    Reply
  83. B says

    October 15, 2020 at 9:59 am

    Great snail to have

    Reply
  84. Fabian Noggle says

    October 15, 2020 at 10:26 am

    LOL im still waiting for my local petco to get stock of cerith in, they have been out for the last couple o months

    Reply
  85. devon maynard says

    October 16, 2020 at 1:45 am

    Love Ceriths

    Reply
  86. cyberkiller6 says

    October 16, 2020 at 7:37 pm

    Have several in my tank, good.

    Reply
  87. C Reab says

    October 17, 2020 at 2:36 am

    Always a part of my clean up crew

    Reply
  88. Bryant Carrasquillo says

    October 17, 2020 at 6:35 pm

    I got an alert saying you guys had them in stock and boom gone -_-

    Reply
  89. TJ Saffioti says

    October 19, 2020 at 11:54 am

    Very helpful guys to keep in your tank!

    Reply
  90. TJ Saffioti says

    October 19, 2020 at 11:54 am

    Very helpful guys to keep in your tank!

    Reply
  91. andrew babcock says

    October 19, 2020 at 2:07 pm

    It work well in my tank

    Reply
  92. shanemsalhus-7885 says

    October 19, 2020 at 2:10 pm

    usually the most resilient of most of the clean up crew i have dealt with other than turbos

    Reply
  93. Brandon Rush says

    October 19, 2020 at 2:35 pm

    Cerith snails are a great addition to any tank.

    Reply
  94. Kyle says

    October 19, 2020 at 3:20 pm

    Have 30 in my tank

    Reply
  95. Leighla Wolf says

    October 19, 2020 at 3:22 pm

    Snails are a great PEACEFUL cleanup crew! They don’t bulldoze your coral or rip each other out of shells EVEN when your tank is littered with extras haha! They munch on algae, don’t carry diseases like brook, and also can move the sand bed! I love my snails!

    Reply
  96. rpkneumann says

    October 19, 2020 at 3:51 pm

    Those snails are bulldozers. Need more!!!

    Reply
  97. Andrew Haslem says

    October 19, 2020 at 6:00 pm

    Love these guys

    Reply
  98. Drew C says

    October 19, 2020 at 7:32 pm

    I have about 20 in my 220g tank and I hardly ever see them.

    Reply
  99. Don says

    October 20, 2020 at 8:06 am

    These are a must have in any saltwater tank! I have a reef/fish tank, and they are completely harmless to all my LPS/SPS corals, even my Indonesian Sea Apple! They control any little patches of green hair algae I get like a Roomba for my tank!

    Reply
  100. Kurt Kidder says

    October 20, 2020 at 7:10 pm

    Cool

    Reply
  101. Justin Walz says

    October 21, 2020 at 11:10 pm

    I need to try this out

    Reply
  102. lapisyogajulianne says

    October 22, 2020 at 1:16 pm

    nice.. ty

    Reply
  103. Alfie Henshaw says

    October 24, 2020 at 10:39 am

    Great article

    Reply
  104. James Wohler says

    October 24, 2020 at 5:55 pm

    Truly a great snail

    Reply
  105. weshamand says

    October 25, 2020 at 2:29 pm

    My puffer would enjoy this snail.

    Reply
  106. meganpratt27 says

    October 26, 2020 at 3:30 pm

    These little guys are a complete all around great addition!

    Reply
  107. smurfjr2 says

    October 26, 2020 at 8:40 pm

    I have some of these

    Reply
  108. devaji108 says

    October 27, 2020 at 10:22 am

    one of my favorite snails! such good CUC.

    Reply
  109. rpkneumann says

    October 28, 2020 at 8:39 am

    Hungry critters. rock spots are white after they are done.

    Reply
  110. Chris Montesione says

    October 28, 2020 at 7:03 pm

    Great info

    Reply
  111. Scott says

    October 29, 2020 at 9:03 am

    Great information! I need to get more snails

    Reply
  112. Jeremy Pryes says

    October 29, 2020 at 10:33 am

    They are tiny, they can turn themselves over and they clean in between all the cracks and nooks.

    Reply
  113. Josh Stevens says

    October 31, 2020 at 10:33 pm

    Great CUC!

    Reply

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