Caption:
Silver arowana, Osteoglossum bicirrhosum (Arowana of Guiana, Osteoglossum arowana). Handcoloured steel engraving by W.H. Lizars after an illustration by James Stewart from Robert Schomburgk's Fishes of Guiana, part of Sir William Jardine's Naturalist's Library: Ichthyology, Edinburgh, 1841.