“…However, the ecological role of laxaphycins remains unclear [ 9 ]. Laxaphycin A, hormothamin A, and lyngbyacyclamides are non-toxic on brine shrimp Artemia , while laxaphycin B is lethal [ 28 , 29 , 39 ]. Hormothamnin A is, on the other hand, toxic on the goldfish Carassius carassius with an LD50 of approximately 5 μg/mL [ 29 ].…”