Hairy Cyano like algae toxic?

[Proteus]

Found this on RC

Anatoxin A(S) is a much more potent derivative of anatoxin A, which would be the form to worry about. There are still more toxic cyanobacterial toxins, such as saxitoxin, that are even more of a problem. Some species do release Aplysiatoxins, which would cause external complications. Once again, ingestion will play a large role, but can cause severe external inflammation. Most who produce this toxin are marine in origin, but I have no idea if/how they would affect corals.