Snails hatching from egg sack w/Pic

tkeracer619 · 08/15/2007, 12:54 AM

Just a minute ago I decided to go scrub some rocks that were in my sump to throw them in a stocking tub with other cycling rock. Unfortunatly my 150 poped a few weeks ago so I ran out of room, all the sump rock went into buckets and had been heavily neglected.

One of the rocks had this on the bottom, they are all dead.

and a larger version.
http://img177.imageshack.us/img177/4...ilrhresqn8.jpg

melev · 08/15/2007, 12:57 AM

You might have gotten lucky on those particular snails. MAYBE they are the safe kind, but they look a lot like the kind that prey on clams and turbo snails.

tkeracer619 · 08/15/2007, 01:31 AM

I did add a bunch of Cerithium atratum from reeftopia.com when I started that tank, they have consistantly laid eggs in the display but they have never survived to this stage. I assume that is what this snail is.

If so I assume those are the good ones.

Paintbug · 08/15/2007, 08:50 AM

i cant say for sure from the pic. but they look like they were Rissoid snails, harmless algae grazers. they could be Pyramid snails, but i cant really see enough detail. heres a great article on the two.
http://www.reefland.com/rho/2006/05/...lid_snails.php

Travis L. Stevens · 08/15/2007, 09:04 AM

That's what I was thinking, Paintbug. Rissoid Snails and the little white spiral things are Spirorbid Worms.

tkeracer619 · 08/15/2007, 11:08 AM

Not knowing what you guys are talking about I pulled up this image in a search

I believe the shell to be in the orientation of the Rissiod, though I have no remains to go look at again. Its hard to tell from the pic but they are in macro there and much smaller in person.

Is there no way they are the ceriths I baught from reeftopia?

Travis L. Stevens · 08/15/2007, 11:17 AM

Highly doubtful. After hatching from the eggs, they become planktonic for a few weeks before settling down to become snails. In this time, they get munched, skimmed, and filtered out of the water. It's not even certain what they eat during this time or what condition is needed to get them to come out of the larval phase. While it's not impossible, it's just highly doubtful you'll be able to raise Cerith Snails from egg to adult, especially in a reef tank.

tkeracer619 · 08/15/2007, 11:24 AM

It would be even more doubtfull they would all land in the same spot on the egg sack. Thanks for everyones help, when setting up this new tank I will keep a keen eye out for them and any asternias my harlequin left, just to be safe =]

Travis L. Stevens · 08/15/2007, 11:32 AM

Hey, the Rissoid Snails are GREAT little guys, so let them liev and multiply. Next to Stomatella Snails and bristleworms, these are worth their weight in gold for their size.

pagojoe · 08/15/2007, 12:57 PM

Yeah, they aren't baby ceriths for sure. As the others suggested, they look to be rissoids. See how the outline of the apertural margin has the odd slant to it? If you hold the shell spire-up, the outer lip will slant outward, then curve back toward the bottom. It gives the lip a convex look. This is characteristic of the Rissoina species.

Cheers,

Don

tkeracer619 · 08/15/2007, 01:05 PM

I think my last post was misinterpreted, Ill be looking for them to get a positive ID now that I know what i'm looking for with the snails. The asternias do have to go, a small group of them ruined it for the rest.

Thanks again for the help.

Travis L. Stevens · 08/15/2007, 01:09 PM

Quote:

Originally posted by tkeracer619
I think my last post was misinterpreted, Ill be looking for them to get a positive ID now that I know what i'm looking for with the snails. The asternias do have to go, a small group of them ruined it for the rest.

Thanks again for the help.

I figured that was the case, but better to inform than assume

08/15/2007, 12:54 AM	#1
tkeracer619 Registered Member Join Date: Jan 2006 Location: Westminster, CO Posts: 17,289	Snails hatching from egg sack w/Pic Just a minute ago I decided to go scrub some rocks that were in my sump to throw them in a stocking tub with other cycling rock. Unfortunatly my 150 poped a few weeks ago so I ran out of room, all the sump rock went into buckets and had been heavily neglected. One of the rocks had this on the bottom, they are all dead. and a larger version. http://img177.imageshack.us/img177/4...ilrhresqn8.jpg __________________ Hobby Experience: 9200ish gallons, 26 skimmers, and a handful of Kent Scrapers. Current Tank: Vortech Powered 600G SPS Tank w/ 100gal frag tank & 100g Sump. RK2-RK10 Skimmer. ReefAngel. Radium 20k.

08/15/2007, 01:31 AM	#3
tkeracer619 Registered Member Join Date: Jan 2006 Location: Westminster, CO Posts: 17,289	I did add a bunch of Cerithium atratum from reeftopia.com when I started that tank, they have consistantly laid eggs in the display but they have never survived to this stage. I assume that is what this snail is. If so I assume those are the good ones. __________________ Hobby Experience: 9200ish gallons, 26 skimmers, and a handful of Kent Scrapers. Current Tank: Vortech Powered 600G SPS Tank w/ 100gal frag tank & 100g Sump. RK2-RK10 Skimmer. ReefAngel. Radium 20k.

08/15/2007, 08:50 AM	#4
Paintbug Registered Member Join Date: Mar 2005 Location: Stoneville, NC Posts: 6,169	i cant say for sure from the pic. but they look like they were Rissoid snails, harmless algae grazers. they could be Pyramid snails, but i cant really see enough detail. heres a great article on the two. http://www.reefland.com/rho/2006/05/...lid_snails.php __________________ Never ask a girl over to see your crabs!! <-Tony-> Current Tank Info: NONE currently

08/15/2007, 09:04 AM	#5
Travis L. Stevens Registered Member Join Date: Nov 2004 Location: Perry, OK Posts: 13,946	That's what I was thinking, Paintbug. Rissoid Snails and the little white spiral things are Spirorbid Worms. __________________ Travis Stevens Current Tank Info: Restarting 28g Bowfront

08/15/2007, 11:08 AM	#6
tkeracer619 Registered Member Join Date: Jan 2006 Location: Westminster, CO Posts: 17,289	Not knowing what you guys are talking about I pulled up this image in a search I believe the shell to be in the orientation of the Rissiod, though I have no remains to go look at again. Its hard to tell from the pic but they are in macro there and much smaller in person. Is there no way they are the ceriths I baught from reeftopia? __________________ Hobby Experience: 9200ish gallons, 26 skimmers, and a handful of Kent Scrapers. Current Tank: Vortech Powered 600G SPS Tank w/ 100gal frag tank & 100g Sump. RK2-RK10 Skimmer. ReefAngel. Radium 20k.

08/15/2007, 12:57 AM	#2
melev Moved On Join Date: Sep 2002 Location: Ft Worth, Tx Posts: 43,217	You might have gotten lucky on those particular snails. MAYBE they are the safe kind, but they look a lot like the kind that prey on clams and turbo snails.

08/15/2007, 11:17 AM	#7
Travis L. Stevens Registered Member Join Date: Nov 2004 Location: Perry, OK Posts: 13,946	Highly doubtful. After hatching from the eggs, they become planktonic for a few weeks before settling down to become snails. In this time, they get munched, skimmed, and filtered out of the water. It's not even certain what they eat during this time or what condition is needed to get them to come out of the larval phase. While it's not impossible, it's just highly doubtful you'll be able to raise Cerith Snails from egg to adult, especially in a reef tank. __________________ Travis Stevens Current Tank Info: Restarting 28g Bowfront

08/15/2007, 11:24 AM	#8
tkeracer619 Registered Member Join Date: Jan 2006 Location: Westminster, CO Posts: 17,289	It would be even more doubtfull they would all land in the same spot on the egg sack. Thanks for everyones help, when setting up this new tank I will keep a keen eye out for them and any asternias my harlequin left, just to be safe =] __________________ Hobby Experience: 9200ish gallons, 26 skimmers, and a handful of Kent Scrapers. Current Tank: Vortech Powered 600G SPS Tank w/ 100gal frag tank & 100g Sump. RK2-RK10 Skimmer. ReefAngel. Radium 20k.

08/15/2007, 11:32 AM	#9
Travis L. Stevens Registered Member Join Date: Nov 2004 Location: Perry, OK Posts: 13,946	Hey, the Rissoid Snails are GREAT little guys, so let them liev and multiply. Next to Stomatella Snails and bristleworms, these are worth their weight in gold for their size. __________________ Travis Stevens Current Tank Info: Restarting 28g Bowfront

08/15/2007, 12:57 PM	#10
pagojoe Team RC Member Join Date: Feb 2007 Location: Conroe, TX Posts: 2,761	Yeah, they aren't baby ceriths for sure. As the others suggested, they look to be rissoids. See how the outline of the apertural margin has the odd slant to it? If you hold the shell spire-up, the outer lip will slant outward, then curve back toward the bottom. It gives the lip a convex look. This is characteristic of the Rissoina species. Cheers, Don

08/15/2007, 01:05 PM	#11
tkeracer619 Registered Member Join Date: Jan 2006 Location: Westminster, CO Posts: 17,289	I think my last post was misinterpreted, Ill be looking for them to get a positive ID now that I know what i'm looking for with the snails. The asternias do have to go, a small group of them ruined it for the rest. Thanks again for the help. __________________ Hobby Experience: 9200ish gallons, 26 skimmers, and a handful of Kent Scrapers. Current Tank: Vortech Powered 600G SPS Tank w/ 100gal frag tank & 100g Sump. RK2-RK10 Skimmer. ReefAngel. Radium 20k.