Fontinha, Mário (1999) Ngombo (Adivinhação): Tradições no Nordeste de Angola, p. 142
In ... some rivers are hidden Ndumba wa meia (water lion), Ripata (huge crocodile) and Tshife (great water snake) ... They say that Ndumba wa meia savages the hippo with ease and leaves a red trail wherever it goes; it can stop the flow of the river, divert its normal course and punish exploratory boatmen.