What the h..... is this ??

[mv3i]

hey guys ...

found this little thing in the tank on the glass this morning ....

some kinda of slug thing i reckon

can someone tell me if it's harmful to the reef ???

can i leave it or should i throw it away ??

[mv3i]

closer look

[[d]3v|L]

izit brine shrimp?

[mv3i]

no ... i dun think so

[Phang]

I think it's a nudibranch... a trinonia maybe...

Caught one recently too from my reef....

[mv3i]

what to with it ... now in the plastic cup ... quite cute there .... ...

[[d]3v|L]

kill it..

[Achilles Tang]

That's a nudibranch.

I have a lot of these in my reef tank too... and they seem to love eating diatoms/microalgae off the glass... any fish that pecks at them will spit them out instantly... bad tasting I presume... chemical defense.

They seem harmless, I don't see them on my corals.

[mv3i]

so you left them in the main tank as algae eater ???

[Achilles Tang]

Yup.