Dictionary of Ichthyology
fish poison tree = various trees come under this heading as parts are used to poison fish, e.g. Acacia ditricha (family Mimosaceae), the leaves of which are poisonous to fish when rubbed in a bag until a soapy foam comes out (Australia), and various Piscidia species (Leguminosae) such as P. mollis where leaves are used (southwest United States and Mexico).