Found nudibranchs in my tank today….. please help me ID what kind

[kaycam1105]

So I recently have gotten several new corals. One of the Alveoporas I got still hasn’t extended its polyps but still has its bright green color. Part of it looks like about 1/4 of it may have died off. I pulled it out today and use my seachem reef dip on it thinking maybe some type of pest was bothering it. Well once I replaced it, I actually put it in a different spot since it didn’t seem to be happy in the previous area. I slowly kept noticing tinyyyyy little nudibranchs on my glass right by where I placed it. I’m really hoping these are not Goni or alveopora eating Nudibranchs. I do have one zoanthid but these don’t look like zoa eating nudis to me. I do not have any Montipora, and these look like the Montipora eating species… do you think it’s coincidental one of my alves is doing poorly or do you think these nudibranchs are feeding on it? I went ahead and dipped my bigger alveopora to be safe (I dip everything before I add them to my tank as well) and did not see any nudibranchs on it. I used a turkey baster to blow all on it to see if any nudis were hiding… I have noticed this alveopora hasn’t been doing the best but doesn’t have any tissue death. Seems to be retracting often. I do know they are a sensitive species so I just attributed it to that before I saw these darn things. My other alveopora and Goniopora are doing fine as well as my zoanthid. I found several tinyyy ones on the same area of the glass and sucked them up with a turkey baster. Please help me identify what type of nudibranchs these are so I can know how to proceed. Thanks in advance. Attached photos, had to use magnifying glass cause they are so tiny.

 

[JGT]

Look like Montipora Nudis. Shouldn’t bother your other corals. They tend to focus on Montis and usually only certain species. Musta came in on one of your other corals. They should die off if no Montis to snack on.

 

[KrisReef]

Those look like little branches of an acro. I don't know which ones, hope JGT is correct.

 

[Reefing_addiction]

So I recently have gotten several new corals. One of the Alveoporas I got still hasn’t extended its polyps but still has its bright green color. Part of it looks like about 1/4 of it may have died off. I pulled it out today and use my seachem reef dip on it thinking maybe some type of pest was bothering it. Well once I replaced it, I actually put it in a different spot since it didn’t seem to be happy in the previous area. I slowly kept noticing tinyyyyy little nudibranchs on my glass right by where I placed it. I’m really hoping these are not Goni or alveopora eating Nudibranchs. I do have one zoanthid but these don’t look like zoa eating nudis to me. I do not have any Montipora, and these look like the Montipora eating species… do you think it’s coincidental one of my alves is doing poorly or do you think these nudibranchs are feeding on it? I went ahead and dipped my bigger alveopora to be safe (I dip everything before I add them to my tank as well) and did not see any nudibranchs on it. I used a turkey baster to blow all on it to see if any nudis were hiding… I have noticed this alveopora hasn’t been doing the best but doesn’t have any tissue death. Seems to be retracting often. I do know they are a sensitive species so I just attributed it to that before I saw these darn things. My other alveopora and Goniopora are doing fine as well as my zoanthid. I found several tinyyy ones on the same area of the glass and sucked them up with a turkey baster. Please help me identify what type of nudibranchs these are so I can know how to proceed. Thanks in advance. Attached photos, had to use magnifying glass cause they are so tiny.

Found this

Montipora eating nudibranch ID, treatment, and prevention

Identification: Montipora Eating Nudibranches are a fairly common aquarium pest that will feed on any montipora species and even some others like select chalices, scrolls etc. There are over 2000 known species of Nudibranchs and all of them have very select diets. They were each put on this...

www.reef2reef.com

 

[kaycam1105]

Look like Montipora Nudis. Shouldn’t bother your other corals. They tend to focus on Montis and usually only certain species. Musta came in on one of your other corals. They should die off if no Montis to snack on.

I hope this is the case… that’s what I thought as well. I will continue to keep a close eye on everything. Thank you for your input!

 

[kaycam1105]

Found this

Montipora eating nudibranch ID, treatment, and prevention

Identification: Montipora Eating Nudibranches are a fairly common aquarium pest that will feed on any montipora species and even some others like select chalices, scrolls etc. There are over 2000 known species of Nudibranchs and all of them have very select diets. They were each put on this...

www.reef2reef.com

I found this same article earlier… have gone down a rabbit hole. Lol!

 

[vetteguy53081]

So I recently have gotten several new corals. One of the Alveoporas I got still hasn’t extended its polyps but still has its bright green color. Part of it looks like about 1/4 of it may have died off. I pulled it out today and use my seachem reef dip on it thinking maybe some type of pest was bothering it. Well once I replaced it, I actually put it in a different spot since it didn’t seem to be happy in the previous area. I slowly kept noticing tinyyyyy little nudibranchs on my glass right by where I placed it. I’m really hoping these are not Goni or alveopora eating Nudibranchs. I do have one zoanthid but these don’t look like zoa eating nudis to me. I do not have any Montipora, and these look like the Montipora eating species… do you think it’s coincidental one of my alves is doing poorly or do you think these nudibranchs are feeding on it? I went ahead and dipped my bigger alveopora to be safe (I dip everything before I add them to my tank as well) and did not see any nudibranchs on it. I used a turkey baster to blow all on it to see if any nudis were hiding… I have noticed this alveopora hasn’t been doing the best but doesn’t have any tissue death. Seems to be retracting often. I do know they are a sensitive species so I just attributed it to that before I saw these darn things. My other alveopora and Goniopora are doing fine as well as my zoanthid. I found several tinyyy ones on the same area of the glass and sucked them up with a turkey baster. Please help me identify what type of nudibranchs these are so I can know how to proceed. Thanks in advance. Attached photos, had to use magnifying glass cause they are so tiny.

These are indeed monti eating nudibranchs and can be an issue especially in numbers. They will eat the flesh off all montis and even some acro and you must now look for eggs as they lay them underneath coral which are tiny and can increase in numbers. You can siphon them with a 3/8" tube but dipping is most effective

 

[Reefing_addiction]

I found this same article earlier… have gone down a rabbit hole. Lol!

I’m like Alice with rabbit holes

 

[kaycam1105]

Those look like little branches of an acro. I don't know which ones, hope JGT is correct.

I do have one single Acropora I added about 2 weeks ago. The pics I’ve seen of the Acropora kind are like a darker tan color that’s why I thought these were the Montipora ones. I just pray they don’t affect anything else. SW is so tricky… so many critters and things you have to worry about. I need to qt all my new corals but the light I have on my qt isn’t great. It’s a more of a bright plant light for freshwater, doesn’t have any blues they’re all white lights.

 

[Reefing_addiction]

I do have one single Acropora I added about 2 weeks ago. The pics I’ve seen of the Acropora kind are like a darker tan color that’s why I thought these were the Montipora ones. I just pray they don’t affect anything else. SW is so tricky… so many critters and things you have to worry about. I need to qt all my new corals but the light I have on my qt isn’t great. It’s a more of a bright plant light for freshwater, doesn’t have any blues they’re all white lights.

You could just dip and inspect with a magnifying glass

 

[kaycam1105]

These are indeed monti eating nudibranchs and can be an issue especially in numbers. They will eat the flesh off all montis and even some acro and you must now look for eggs as they lay them underneath coral which are tiny and can increase in numbers. You can siphon them with a 3/8" tube but dipping is most effective

I have no montis and one single Acropora… will they bother my alveopora or Goni?

 

[kaycam1105]

I’m like Alice with rabbit holes

Lol me too!

 

[KrisReef]

I do have one single Acropora I added about 2 weeks ago. The pics I’ve seen of the Acropora kind are like a darker tan color that’s why I thought these were the Montipora ones. I just pray they don’t affect anything else. SW is so tricky… so many critters and things you have to worry about. I need to qt all my new corals but the light I have on my qt isn’t great. It’s a more of a bright plant light for freshwater, doesn’t have any blues they’re all white lights.

Do you dip? Potassium Chloride would have stopped the adults.

 

[vetteguy53081]

I have no montis and one single Acropora… will they bother my alveopora or Goni?

Alveopora and goni- Should not

 

[Reefing_addiction]

I have no montis and one single Acropora… will they bother my alveopora or Goni?

Oh I would nuke the tank if that was a possibility!!

But I may have an incredibly large Goni collection

 

[kaycam1105]

Do you dip? Potassium Chloride would have stopped the adults.

Yes, I use reef dip by seachem. It’s iodine based. I sometimes follow up with a hydrogen peroxide dip depending. I know some ppl say iodine isn’t as effective with Nudibranchs.

 

[kaycam1105]

Oh I would nuke the tank if that was a possibility!!

But I may have an incredibly large Goni collection

Can’t do that gorgeous btw!

 

[vetteguy53081]

Yes, I use reef dip by seachem. It’s iodine based. I sometimes follow up with a hydrogen peroxide dip depending. I know some ppl say iodine isn’t as effective with Nudibranchs.

Iodine - little effect. Coral RX very effective but not an in-tank treatment and do not Nuke tank as you might as well tear tank apart which is not ideal

 

[kaycam1105]

Iodine - little effect. Coral RX very effective but not an in-tank treatment and do not Nuke tank as you might as well tear tank apart which is not ideal

I’ll have to try coral rx. I’ve heard other people say good things about that as well. I’m thinking about getting a six line wrasse, I used to have one in my old tank and it never caused any issues and wasn’t aggressive at all like people say. Every fish is different though, even when they’re the same species. I loved that thing he/she was so much fun to watch. But I’ll want to QT it of course… I am tempted to just add it right in to really try and take care of this issue asap. But I don’t have any Montipora so I’m praying they go away and don’t bother any of my other corals.