Slug with leopard marks

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neonreef3d

neonreef3d

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I’ve never seen a slug like this,, harmful? Or not?
 
Orphek OR3 reef aquarium LED bar
Most slugs and nudis have a specific diet. If you don't have their food supply growing, they will just die and pollute your tank. I don't know this one's diet, sorry
 
Didn’t look friendly, so I removed it..

I would still like to ID this critter, and it came aboard as a hitchhiker of course.. anyone out there with some idea would be great!!
 
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nice weird one. Not similar to sea slugs or nudis I recognize, bumping for more eyeballs.
Color doesn't give it away as either algae or coral eater...
 
OP,
Did you ever get a positive ID on this guy?
Mine look identical to the picture of yours in the shot glass above.
Apparently, they had babies and infested my GSP. We pulled at least 150 of them off of it today.

20210919_123830.jpg
 
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cnewmanx said:
OP,
Did you ever get a positive ID on this guy?
Mine look identical to the picture of yours in the shot glass above.
Apparently, they had babies and infested my GSP. We pulled at least 150 of them off of it today.

20210919_123830.jpg
Click to expand...
Same exact problem.. I had my gsp close up one day, the. I started to take notice of these little wormy slugs,,, I removed dozens of them,,, turkey baster does wonders!!
Been a week now, and I still notice thmore come out, keeping it in the frag tank to observe it.
 
It appears to be a member of the Dermatobranchus genus. Possibly D. alba or D. semilunus. Possibly an undescribed species. Some members of this genus are known to feed on corals. Here is a pic. of D. semilunus for comparison.
1632180472644.png
 
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Thank you all for the information.

Since these little guys are most likely a nudibranch (D. semilunus) that dwells on or eats GSP, what will likely be the best way to keep it at bay?
I know there probably isn't a chemical that will kill them without nuking the other inverts in the tank.
Is there a fish out there that will eat them and not destroy corals in the process?

I'll continue to pick them off as they are seen. I have a feeling that is going to be the only way to keep the numbers low.

Has anyone had success getting rid of these?
 
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cnewmanx said:
Thank you all for the information.

Since these little guys are most likely a nudibranch (D. semilunus) that dwells on or eats GSP, what will likely be the best way to keep it at bay?
I know there probably isn't a chemical that will kill them without nuking the other inverts in the tank.
Is there a fish out there that will eat them and not destroy corals in the process?

I'll continue to pick them off as they are seen. I have a feeling that is going to be the only way to keep the numbers low.

Has anyone had success getting rid of these?
Click to expand...
Not to be funny, but I am sure some folks out there would buy these for tanks over run with GSP. Just saying.
 
Im still removing these little pests from my gsp i moved to my frag tank. the GSP is opening now, It developed some hair algae, that im battling now.

still have not Identified these things, but they eat GSP for sure.
 
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