Are Green Taro Elephant Ear Plants Toxic To Fish?

Are Green Taro Elephant Ear Plants Toxic To Fish? Taro (Araceae Colocasia esculenta) However, all parts of the plant are toxic to fish (as well as humans, dogs, cats, and likely many other organisms) if ingested due to the presence of insoluble calcium oxalate acid. Can taro grow in aquarium? These plants make a great