Toxicological trivia from August 05, 2016: Clownfish or anemonefish are fishes from the subfamily Amphiprioninae in the family Pomacentridae. Thirty species are recognized: one in the genus Premnas, while the remaining are in the genus Amphiprion. In the wild, they all form symbiotic mutualisms with sea anemones. Depending on species, anemonefish are overall yellow, orange, or a reddish or blackish color, and many show white bars or patches. The largest can reach a length of 18 centimetres, while the smallest barely achieve 10 centimetres.Unlike other fish species, the protective layer of the genus Amphiprion lacks a specific substance that:a) Triggers the attack of nematocysts (stings of an anemone):b) Allows immunity against toxic fish bites;c) Both previous assertions are correct. 

Correct answer: c. Read more in WP.Watch video: Symbiosis & Anemonefish – Reef Life of the Andaman – Part 18