A Cyanotoxin is a toxin secreted by certain cyanobacteria (blue-green algae).
Anatoxin-a
Anatoxin-as
Aplysiatoxin
Cylindrospermopsin
Domoic acid
Microcystin LR
Nodularin R
Saxitoxin
Toxic cyanobacteria in water Cyanotoxin review with chemical structures.