Eradicting pyramid snails

GoSUV

New member
I am re-posting this in this forum. I originally posted it in the reef fish forum, but was advised that I could get more helpful advise here concerning the health of my future clam(s).

I am looking to add a wrass to my 125g system, in order to control those tiny clam-eating snails, with a plan to add a clam later. I know I have those tiny snails in my system because I see them at night. These tiny b@stards are hard to eradicate manually.

Which kind will do this primary job, without being:
1) too aggressive;
2) harm to my LPS corals (torch, hammer, fungia, brain);
3) too finicky to feed other foods;

I know the yellow coris wrass will do such a job, in addition to controlling flat worms. But it has a habit of jumping and sleeping in sand, stiring up sediment. The primary worry being that its digging activities will irritate my sand dwelling LPS corals.

The sixline might also do such a job, but from what I gathered, it is pretty aggressive.

The eightline and fourline might seem good candidates, but these seem to be not very common and I haven't been able to find much info about them.

Any other fish(es) or inverts will help control such snails? The peppermint shrimp has been mentioned, but will it fight with my present blood/fire shrimp and will the peppermint harm my other corals?

Will these wrasses also harm my pods population because I also intend to add a mandarin to my system and don't want extra food competition.

Thanks in advance.
 
I got a yellow canary (aka coris) wrasse for just this reason. I believe the snails are finally gone (I have to do a night time look again).

But apart from sleeping in the sand at night, he doesn't stir up anything. A great addition IMO.

Are you worried about jumping because you have an open top tank? If so, I think all wrasses are known for jumping.
 
Well, the jumping part is pretty much "covered" (pardon the pun), since I have eggcrate over my tank.

My other consideration for the yellow canary/coris wrasse is of course my pods population, since a mandarin is in my plans.

How is the suitability of the yellow canary/coris compared to that of the fourline, sixline and eightline varieties?
 
are you sure they are pyramid snails and not rissoids?? can you post a picture? and what are they feeding on right now??

wrasses are not usually effective as they are diurnal and the pyramid snail is nocturnal. the six line will definitely out compete a mandarin for pods, so that is not a good choice.
 
<a href=showthread.php?s=&postid=13157219#post13157219 target=_blank>Originally posted</a> by a4twenty
are you sure they are pyramid snails and not rissoids?? can you post a picture? and what are they feeding on right now??

wrasses are not usually effective as they are diurnal and the pyramid snail is nocturnal. the six line will definitely out compete a mandarin for pods, so that is not a good choice.

I am pretty sure they are pyramid snails because I only see them when the lights are off. I can't post a picture because they are so small (2-3mm) and I only see them when the tank lights are off. One night I saw them feeding on those tiny clams that hitchhike from the LR. They are definitely clam eaters. For the tiny clams that come from the LR I can do nothing about, but I'd hate to lose a beautiful $70 clam.

You're right that I have some doubts over the wrasses because the snails come out to feed when their predators go to sleep at night.

So what are my choices?
 
unfortunately the only way the get rid of these pests is manual removal and limiting / removing their food source. have you seen any of them on your snails?

you need to pick them off and look for their egg sacks at the same time, which are usually found on the shell of whatever they are eating. this is not going to be easy, so remove everything they are eating and remove as many pyrams and egg sacks everyday, it can be done.

good luck
 
<a href=showthread.php?s=&postid=13162353#post13162353 target=_blank>Originally posted</a> by a4twenty
unfortunately the only way the get rid of these pests is manual removal and limiting / removing their food source. have you seen any of them on your snails?

you need to pick them off and look for their egg sacks at the same time, which are usually found on the shell of whatever they are eating. this is not going to be easy, so remove everything they are eating and remove as many pyrams and egg sacks everyday, it can be done.

good luck

Thanks for your response. BTW, what's a rissoids?

If I buy some clam meat from the supermarket, put some in a small net and tie it to a length of string, can I "fish" out some of these snails? I don't seem to see any egg sacks, as I don't have any large clams in my tank, so their food source is relatively scarce, just whatever tiny clams are left from the LR.
 
I dont have any clams but I have been seeing pyramids on my astrea snails lately. I have not seen any pyramids on my cerith snails.

Do pyramids eat any corals other than clams? I have been picking the pyramids I see off my astreas but Im a little concerned about what else they may attack.
 
<a href=showthread.php?s=&postid=13163563#post13163563 target=_blank>Originally posted</a> by GoSUV
....., what's a rissoids

Rissoid's are another type of beneficial snail that feeds on micro algae and small bits of detritus but looks almost identical to the pyramid snail from a distance. a close up examination can usually differentiate between the two species, as well as watching their behaviour / eating habits.

<a href=showthread.php?s=&postid=13163563#post13163563 target=_blank>Originally posted</a> by GoSUV
If I buy some clam meat from the supermarket, put some in a small net and tie it to a length of string, can I "fish" out some of these snails?

i don't know if that will work but it is a cheap enough experiment, give it a try and let us know if it works. i'm just not sure if dead meat will attract or maintain their interest. also don't leave the dead meat in to long and remember they are nocturnal.

<a href=showthread.php?s=&postid=13163563#post13163563 target=_blank>Originally posted</a> by GoSUV
I don't seem to see any egg sacks

if they are pyramids, they will usually attach their egg sack to the shell of their host and don't usually venture to far from the food source. look very closely, they are very small.
 
<a href=showthread.php?s=&postid=13163939#post13163939 target=_blank>Originally posted</a> by Apercula
I dont have any clams but I have been seeing pyramids on my astrea snails lately. I have not seen any pyramids on my cerith snails.

Do pyramids eat any corals other than clams? I have been picking the pyramids I see off my astreas but Im a little concerned about what else they may attack.

there are thousands of varieties of pyramid snails so there is no guarantee but they generally feed on the larger snails ( definitely astrea ) or tridacnid clams. i have never heard of a case of them attacking corals, they like to feast on the blood of their host and generally hide during the day.

when you are picking them off the snails, also keep an eye out for their egg sacks, and remove them too.
 
I have no less than 10 Astraea snails and I have never seen those tiny snails attack or feed on them. Maybe the tiny snails I have in my tank are not pyramids. How do they attack Astraea snails specifically?
 
Night pic so my auto focus was having issues getting a clear shot.
There are 7 pyramids on the shell just below the foot, snail was on the front glass so I got a good view of the underside.
pyramidsnails.jpg


I have not added any snails since last December, and I had a clam only briefly in February. Just saw pyramids for the first time last week, which is why I was wondering if they were known for being on other kinds of corals.
 
I have a 110 gallon that is loaded with very large clams. About 1 month ago I noticed that I had pyramid snails. What is ironic is no new clams have been added to this tank in over 1 year. Taking these large clams out and manually cleaning them is out of the question. I added a pair of leopard wrasses about 2 weeks ago. I cannot find a snail on any of the clams. Before I added the wrasses I could count 20 of these little buggers on my large Derasa. Now I cannot find one
 
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