In the caption of Fig. 1 of Plate I, Müller & Schlegel (1844) state: “Osteoglossum formosum; a little more than
half of its natural size.” As the total length of the drawn specimen is 315 mm, the specimen should be slightly less
than 63 mm. Remarkably, this makes the skeleton RMNH.PISC.Sk.366 the most likely specimen from which the
habitus was drawn.