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Yes that is a Nudi that has been eating a lot of aptasiaCurious if anyone has seen berghia nudibranches turn blue like this. Picture don't really do it justice it is very blue.
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I wish I knew how to ship because I have 20 or 30 blue ones like that. I am in Chicago.I have seen them blue-gray when very well fed (similar to how your picture looks on my monitor), but not true blue as you describe. I would agree it probably just reflects the color of the Aiptasia it ate, some larger aiptasia can show iridescent blue-green color on their face. There is another species Berghia coerulescens which has blue cerata with yellowish tips, but I do not believe this species is in the hobby at least in North America. Regardless those Berghia look plump and healthy.
I would be very curious to know the source, if you don't mind sharing this information?
Blue Aiptasia or blue Berghia nudibranchs?I wish I knew how to ship because I have 20 or 30 blue ones like that
Aptasia with blue heads yes but I’m not trying to get rid of those the Nudie branch tend to have a blue hint to them but it’s more of a darker color. Those I want to sellBlue Aiptasia or blue Berghia nudibranchs?
The aptasia has like baby blue patterns on the face and are fairly large
I went to a guys house for a tank break down That I was taking everything and when I got there I was surprised to see his very neglected tank full of these blue ones. At the time I just hoped the nudi ate them and turns out they do so it worked out well for me starting my aptasia farm that is now 90% blue faceYes, that color is what I have seen as well. In my case it isn't all of the Aiptasia, but the blue-faced Aiptasia just show up sporadically.

Step 1-expose Aiptasia to mutagens.I went to a guys house for a tank break down That I was taking everything and when I got there I was surprised to see his very neglected tank full of these blue ones. At the time I just hoped the nudi ate them and turns out they do so it worked out well for me starting my aptasia farm that is now 90% blue face![]()
I have seen them blue-gray when very well fed (similar to how your picture looks on my monitor), but not true blue as you describe. I would agree it probably just reflects the color of the Aiptasia it ate, some larger aiptasia can show iridescent blue-green color on their face. There is another species Berghia coerulescens which has blue cerata with yellowish tips, but I do not believe this species is in the hobby at least in North America. Regardless those Berghia look plump and healthy.
I would be very curious to know the source, if you don't mind sharing this information?
They typically reflect that shade of blue with also some hints of yellow that make them look absolutely stunning!Curious if anyone has seen berghia nudibranches turn blue like this. Picture don't really do it justice it is very blue.
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I have been separating these kinds and started breeding only the dark blues. Waiting on the first batch of eggs to pop out.I got these about a month ago from @keatonmjenkins
They were all much smaller(just as they were advertised), but they have grown a lot in a month

