Are Arum Lilies Poisonous To Fish?

Are Arum Lilies Poisonous To Fish? We found no direct evidence of calla lilies being harmful to fish. However, they do have a toxic substance called insoluble calcium oxalate. When cats or dogs consume them, they suffer from pain, difficulty in swallowing, and swelling. It irritates the gastrointestinal tract. Are lilies toxic to fish? Plant