• Neritina - Nerite snails

    Photo thanks to Dave Wilson, Aquagreen

    Wondering if anyone has had any experience with snails of the genus Neritina? I know they're used o/s for algae control, and apparently have a non fw larval stage (the species that's used anyway).... so particularly for any of our members from overseas, any experience - good/bad/indifferent?

    I know from my handy dandy university text that the genus is found here in australia in marine, brackish and fresh water environments, but my text book isn't quite dandy enough to tell me which species there are, or exactly where they're distributed. I wonder if we look hard enough, we may be able to collect a species of Neritina for use in the aquarium?

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    This article was originally published in forum thread: Nerite snails started by rufus View original post
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    1. DiscusEden's Avatar
      DiscusEden -
      Quote Originally Posted by Graeme View Post
      Hi Rufus

      i was interested in these guys as well.Asked about locally and came up with nothing.
      Please keep us posted if you have any luck, although us WA members seem to have a real problem with snails.For some reason our government bodies dont think we should allow snails in.I think they have a misguided reason behind it.

      Quote Originally Posted by Dave View Post
      I have been on the Nerita trail ever since they were bought to my attention by Bruce Hansen as a possible algae cleaning tool. The local snail expert here in the NT Museum doesn't have any locations but believes there may be some species, one in particular that will most likely be found in small fast rocky streams near the coast. I have been looking in all the creeks and rivers for snails. The species found so far have been photographed and when identified I will put the picture on the ANGFA database.

      Any that I find that are suitable as aquarium species I will apply to the NT Government to have them placed on my aquaculture licence.

      I try to find out why Governments place bans on things. The snails carry life stages of parasites that can affect humans and domestic animals. I think only one species is involved but because all snails look alike they ban them all for ease of administration.

      When you make a complaint about the administrative practises they put it on industry to come up with the funding to prove the others safe. They call this the practise envoking the precautionary principle. there are a couple of pages on the precautionary principle on wikipedia.

      Quote Originally Posted by niko View Post
      I believe that Nerites are overrated. They do help with the algae, especially the algae that encrusts stones. But they are very inconsistent - they can clean a small area and then move away leaving it "unfinished". Here's an example from one of my tanks:

      10 Nerites in a 60 liter tank do very little to keep it clean. Their white eggs (looking like scattered sesame seeds, just snow white) are not that big of a nuisance but are somewhat hard to scrub.

      Some suppliers actually ship Nerites that feel happier in brackish water. In a freshwater tank they hang by the water surface and even above it, never go lower or eat any algae. I guess such brackish water Nerites need an acclimation period but I've never heard a successful story with them. Also some people have tried to get the Nerites sold for saltwater tanks and acclimate them gradually to freshwater, but there was never a definite answer if that could be done or not.

      Amano shrimp do much better job cleaning algae. The Nerites could look pretty decorative if you get the ones with the striped shells. But other than that they have the efficiency of an Otocinclus - very much an animal that brushes the debries off the plant leaves when it moves over them...

      Quote Originally Posted by Ammo View Post
      Can we get these in AU?

      Quote Originally Posted by Dave View Post
      There are a few that look a bit like that. I know this is an old thread but I am trying to get interested people to have a go a breeding these things that have such an interesting life history.

      Photos thanks to Dave Wilson, Aquagreen

      Pictured are some from the Kimberley in WA. The photos were taken by a friend of mine.

      Quote Originally Posted by tangcla View Post
      They look great Dave. Would love to get some in my tank are you stocking these?
      What's involved in breeding them, in terms of water conditions etc?
      Quote Originally Posted by mr_c265 View Post
      These are brackish breeders aren't they? Have you had much luck with them Dave?
      Quote Originally Posted by rufus View Post
      Those are GORGEOUS!

      Dave, I still have most of the mud nerites I got from you last time; I kept them in brackish conditions for almost 2 years and have recently accluimated them to fresh. I tried two from the initial batch in a FW tank, to which they acclimated without an issue. They did pretty well in there, but the REALLY don't fare well again filter inlets :/

      The remaining ones are still doing well, hanging out in a moderate-hardness tank with some M. pygmaeus, M. Lacustris, and some seep gobies.

      I took some pucs last week, actually, will drag them off the camera this weekend...

      While I kept them in the brack tank, they laid HEAPS of eggs, but I never did see and veligers (sp?). They may need slightly different conditions (higher salinity/temp?) or certain foods. It's also likely that different species might have different success in FW. Would really love to get these breeding but, as always for me, it's an issue of time...
      Quote Originally Posted by Dave View Post
      I have another undescribed species from the Daly River, it is in fresh water about 90 km from the sea, a good hope for one that may breed in fresh. The Daly is hard and alkaline. I'll take some pics of it soon. The snail is dull grey more narrow shell than the other local mud nerite, much less colourful.

      Quote Originally Posted by Baccus View Post
      Since we're talking about nerites and undesribed nerites I was wondering if you had any ideas on the indentity of this type of nerite. All I know is that it came from up north possibly Cape York region. I have three of them which are mainly nocturnal, during the day they tend to either hide or just stick on one place in the tank. Its an open topped tank but they have not wondered off and only occasionally will they even have their "noses" barely out of the water. Only once have I seen eggs on one of the shells ( only three white egg cases at that), which stayed in place for ages but I never did see any larval anything in their tank. But then its pretty insanely overgrown with mosses and does have endlers in the tank.

      Quote Originally Posted by Dave View Post
      See if you can get a photo from directly above and I'll send the ventral photo and the above photo to Vince Kessner. Vince has given me the location of the undescribed species in the Daly River and he is used as the snail man by the Federal Govt Dept of Sustainability, Env, water,populations etc as their snail expert. he lives here in the NT and knows most snails in the bush personally. His qualifications as stated by him at the last Bush Blitz survey are "Snail Collector". Vince just told me of another undescribed Notopala that is bigger than N.waterhousei. The cost of an id is a specimen, so if one dies send it to me and I'll give the shell to Vince.
      Quote Originally Posted by Baccus View Post
      Wish I had known about needing a specimen sooner, when I first got them one had a hole in its shell that it eventually died from, but the other 3 have been powering along.
      Here is an above picture I took when they first arrived. If you need one closer let me know.
      Quote Originally Posted by Dave View Post
      I sent the pics off to Vince, I hope he has time to answer.
      Quote Originally Posted by dollarpots View Post
      Just moved into our new house and I've got loads of space! Happy to attempt breeding some in a few different small tanks specifically for this purpose if anyone wants to give me a direction to go in.

      Renting previously I never had the space to breed anything as seriously as I'd liked. Four bedrooms when we only need one.... I smell a fish room of sorts coming on!
      Quote Originally Posted by Dave View Post
      This text came from somewhere off the WWW. I dont know who wrote it but I have tried the method with two species I have here and nothing has happened. Someone on this forum sent it to me, thanks, it is a starting point. I have thousands of eggs to use but ...
      __________________________________________________ ____

      Breeding Nerite Snails

      1. Pick an item with some good algae growth to it. Place this item where your Nerite well be. FRESH, SALT OR BRACKISH WATER. What temp isn’t important. Water quality should be at the best possible. I personally like using drift wood. Driftwood has tons of algae for these baby to feed.

      2. Wait a few days. Until you see a good amount of eggs on item/decor. These eggs look like little sesame seeds. WARNING DONT TRY TO REMOVE THESE EGGS BY SCRAPPING THEM. You'll pop the shell. Wait about 72 hours to get a nice size decor with eggs on them.

      3. Set up a small tank. I’m using a 1 gallon tank to nurse the babies nitrites. A air bubble line that is set very low 1bubble ever 2 seconds. Also a marine/saltwater (freshwater salt wont work). Why salt and not brackish. The reason is once these Nertie are born at this stage they need all the calcium and mineral to develop a health strong shell. Which well increase the level of survival as juveniles. I had little luck with brackish water. My percentage increased about 80 percent when I’ve hatched Nerite in fully saltwater tank. I usually fill the saltwater level just enough to cover the decor/driftwood.(this is where youll place your decor cover with eggs)

      4. Usually about every 3 days I well perform a 50 percent water change. Don’t want your snail to die from bad water. This is easy to do. Don’t be lazy takes less then 5 mins.

      5. Once your eggs are hatching. Theyll hatch at a very slow rate. You’ll see that they're very small larvae. You can feed them algae that's on your décor or driftwood. If not you can head to your local aquarium or pet shop. And purchase some algae chips.
      Chop these algae chips into small fine grains. And drop them in your tank. Feed them by eye. If you don’t see any food. Give them food.

      6. Once you see a nice shine to the shell on your snail, its time to move them. This process can take weeks. I don’t recommend one or 2 days. They'll die on you. Purchase a small measuring device. The measurement I am using is ML. For my one gallon tank. I would treat about gallon of freshwater(for people out there that don’t know what Im talking about treating your water. Neutralizing water from harmful chemicals using(Tetra Aqua Clear (or any other brand).Simply ever morning take out 10ml of tank water. Replace 5Ml in the morning and 5ML at night. For a full month. This step is only for freshwater tanks. For brackish or salt. Just lower the level of salt until you reach your tanks ppm. For a safe entry.
      Quote Originally Posted by Baccus View Post
      Interesting read Dave, and thanks for sending off the photos of my snails.
      Quote Originally Posted by Dave View Post
      It is not mine, I would like to give a credit to the author but cant. Vince had gone off to Timber Creek last I heard but I'll find him with the email or he will come home eventually.


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