Blue Spotted Sea Hare

[don1234]

Are they Poisonous and aren't they supposed to eat Cyno. I read somewhere that they squirt blue ink? Any truth to this?

 

[saxman]

actually, it's purple ink, but they only do this when stressed/harassed.
they eat hair algae and diatoms...i've never seen one eat cyano. also, IME, they do better at lower temps (low-mid 70's).
HTH