Hydroids

jimboslice · 12/03/2008, 10:13 PM

Are these Hydroids?

and I'm a little confused, are these bad guys are good guys?

D_Hood87 · 12/03/2008, 10:15 PM

i have had these guys come and go for a few months but i was told they arnt hydroids

jimboslice · 12/03/2008, 10:46 PM

Yah when I type "hydroids", I get results that don't look like these guys. But when I type "hydroids on glass" they come up. I have also seen the called this on a few websites. I highly doubt it is the jelly fish some people call them. I'm leaning towards a pod of some type. Just trying to find out the real name.

jimboslice · 12/03/2008, 10:55 PM

I'm seeing it called a "Hydroid Jellyfish" in allot of places. But I'm still not sure if that is what they really are?

D_Hood87 · 12/03/2008, 11:55 PM

i e-mailed that pic to one of my good friends he has been into reef's for most of my life and he said its not hydroids that it was a type of pod and they add to bio diversity

jimboslice · 12/04/2008, 04:23 AM

I wonder what the specific name is for them??

jimboslice · 12/04/2008, 11:52 PM

Does anyone know what these are Exactly? I'm not worried in any way, just trying to learn as much as I can. This one seems to stump some people.

klepto · 12/05/2008, 12:22 AM

ive got some of these too-- heard them called hydroids, but never have read or heard anything too convincing.... perhaps a mod has some insight here...

jimboslice · 12/05/2008, 01:02 AM

Only answers I have gotten are, hydroid, hydroid jellyfish, and Pod. Well I have guessed that it is some sort of pod, but I am trying to narrow down all the exact names on the pods.

justinl · 12/05/2008, 02:04 AM

if they move, they're a kind of pod. if they are sessile (stuck to the glass), then they are definitely hydroids. I am leaning more towards hydroids. Look carefully at the results you get from an image google search on hydroids. Hydroidea is frighteningly diverse with many known species unnamed because of the sheer volume (well... and the fact that not many biologists specialize in hydroid taxonomy!

). Even the polyps of a single species usually look very different as they mature and get ready to asexually reproduce.

hydroid and "hydroid jellyfish" are probably the same thing. Hydroids have a short (relative to their closest group, the true jellies in Anthozoa) stage in their lifecycle when they are a pelagic "hydromedusa." hydromedusae look very similar to true jellies in their medusa form but there are anatomical differences if you know what to look for. for the record though, it if it is a hydroid or jelly and they're stuck to something, it's in the polyp stage of their lifecycle. if it's swimming around in the water column, medusa.

jimboslice · 12/05/2008, 02:27 AM

They do not move and if and when they do it is very very little and very slow. I'm trying to figure out how they multiply. It looks like they get big then split, but I have not actually seen it. I have not even seen one that looks like its splitting at all but they seem to get bigger then the next day there is more of them and they are slightly smaller.

crvz · 12/05/2008, 06:07 AM

There are many different kinds of hydroids, but those do remind me of them. You may want to ask the folks at WWM, or just do a search.

http://www.wetwebmedia.com/hydrozoanfaqs.htm

12/03/2008, 10:13 PM	#1
jimboslice Registered Member Join Date: Nov 2008 Location: Las Vegas Posts: 157	Hydroids Are these Hydroids? and I'm a little confused, are these bad guys are good guys? __________________ 20gallon high Nova Sundial 4x24w T5 Sumpless Skimmerless 60x's Turnover Fluval 205 Canister (stock media 30lbs live rock 20lbs live sand Current Tank Info: 20 Nano

12/03/2008, 10:15 PM	#2
D_Hood87 Registered Member Join Date: Dec 2008 Location: Chesapeake, Virginia Posts: 323	i have had these guys come and go for a few months but i was told they arnt hydroids __________________ DONALD Current Tank Info: 160gal REBUILD....GOING SPS ALL THE WAY!!!

12/03/2008, 10:46 PM	#3
jimboslice Registered Member Join Date: Nov 2008 Location: Las Vegas Posts: 157	Yah when I type "hydroids", I get results that don't look like these guys. But when I type "hydroids on glass" they come up. I have also seen the called this on a few websites. I highly doubt it is the jelly fish some people call them. I'm leaning towards a pod of some type. Just trying to find out the real name. __________________ 20gallon high Nova Sundial 4x24w T5 Sumpless Skimmerless 60x's Turnover Fluval 205 Canister (stock media 30lbs live rock 20lbs live sand Current Tank Info: 20 Nano

12/03/2008, 10:55 PM	#4
jimboslice Registered Member Join Date: Nov 2008 Location: Las Vegas Posts: 157	I'm seeing it called a "Hydroid Jellyfish" in allot of places. But I'm still not sure if that is what they really are? __________________ 20gallon high Nova Sundial 4x24w T5 Sumpless Skimmerless 60x's Turnover Fluval 205 Canister (stock media 30lbs live rock 20lbs live sand Current Tank Info: 20 Nano

12/03/2008, 11:55 PM	#5
D_Hood87 Registered Member Join Date: Dec 2008 Location: Chesapeake, Virginia Posts: 323	i e-mailed that pic to one of my good friends he has been into reef's for most of my life and he said its not hydroids that it was a type of pod and they add to bio diversity __________________ DONALD Current Tank Info: 160gal REBUILD....GOING SPS ALL THE WAY!!!

12/04/2008, 04:23 AM	#6
jimboslice Registered Member Join Date: Nov 2008 Location: Las Vegas Posts: 157	I wonder what the specific name is for them?? __________________ 20gallon high Nova Sundial 4x24w T5 Sumpless Skimmerless 60x's Turnover Fluval 205 Canister (stock media 30lbs live rock 20lbs live sand Current Tank Info: 20 Nano

12/04/2008, 11:52 PM	#7
jimboslice Registered Member Join Date: Nov 2008 Location: Las Vegas Posts: 157	Does anyone know what these are Exactly? I'm not worried in any way, just trying to learn as much as I can. This one seems to stump some people. __________________ 20gallon high Nova Sundial 4x24w T5 Sumpless Skimmerless 60x's Turnover Fluval 205 Canister (stock media 30lbs live rock 20lbs live sand Current Tank Info: 20 Nano

12/05/2008, 12:22 AM	#8
klepto Registered Member Join Date: Jul 2008 Location: Monterey, California Posts: 1,955	ive got some of these too-- heard them called hydroids, but never have read or heard anything too convincing.... perhaps a mod has some insight here... __________________ Everything you do can be done better from a place of relaxation. Stephen C. Paul

12/05/2008, 01:02 AM	#9
jimboslice Registered Member Join Date: Nov 2008 Location: Las Vegas Posts: 157	Only answers I have gotten are, hydroid, hydroid jellyfish, and Pod. Well I have guessed that it is some sort of pod, but I am trying to narrow down all the exact names on the pods. __________________ 20gallon high Nova Sundial 4x24w T5 Sumpless Skimmerless 60x's Turnover Fluval 205 Canister (stock media 30lbs live rock 20lbs live sand Current Tank Info: 20 Nano

12/05/2008, 02:04 AM	#10
justinl Registered Member Join Date: Jan 2007 Posts: 2,118	if they move, they're a kind of pod. if they are sessile (stuck to the glass), then they are definitely hydroids. I am leaning more towards hydroids. Look carefully at the results you get from an image google search on hydroids. Hydroidea is frighteningly diverse with many known species unnamed because of the sheer volume (well... and the fact that not many biologists specialize in hydroid taxonomy! ). Even the polyps of a single species usually look very different as they mature and get ready to asexually reproduce. hydroid and "hydroid jellyfish" are probably the same thing. Hydroids have a short (relative to their closest group, the true jellies in Anthozoa) stage in their lifecycle when they are a pelagic "hydromedusa." hydromedusae look very similar to true jellies in their medusa form but there are anatomical differences if you know what to look for. for the record though, it if it is a hydroid or jelly and they're stuck to something, it's in the polyp stage of their lifecycle. if it's swimming around in the water column, medusa.

12/05/2008, 02:27 AM	#11
jimboslice Registered Member Join Date: Nov 2008 Location: Las Vegas Posts: 157	They do not move and if and when they do it is very very little and very slow. I'm trying to figure out how they multiply. It looks like they get big then split, but I have not actually seen it. I have not even seen one that looks like its splitting at all but they seem to get bigger then the next day there is more of them and they are slightly smaller. __________________ 20gallon high Nova Sundial 4x24w T5 Sumpless Skimmerless 60x's Turnover Fluval 205 Canister (stock media 30lbs live rock 20lbs live sand Current Tank Info: 20 Nano

12/05/2008, 06:07 AM	#12
crvz Team RC Member Join Date: Jul 2005 Location: houstonia Posts: 7,989	There are many different kinds of hydroids, but those do remind me of them. You may want to ask the folks at WWM, or just do a search. http://www.wetwebmedia.com/hydrozoanfaqs.htm __________________ -Chris- You don't win friends with salad. "Look! They're trying to learn for free!" ... "Use your phony guns as clubs!" Current Tank Info: rectangluar? wet?