i recently added a couple sea slug to help eat algea. just standard brown/gray ones but i pulled one out this morning with neon blue dots on it? could it be poisonous?
Or if you know someone who has the book "Nudibranchs of the World: 1,200 nudibranchs from around the world with more than 2,500 photographs" by Helmut Debelius and Rudie Kuiter, you could take a look there also.
Toxicity of sea slugs varies greatly. Bursatella & other sea hares are fairly harmless except of course for causing a spike when they die. The red ink they produce is derived from algal compounds & is not toxic.
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