The preferred natural habitatofH. johannis is the vicinity of rivers and streams in forest and montane grassland, at altitudes of 1,200–2,750 m (3,940–9,020 ft), but it has also been found in artificial habitats such as rice paddies.[1]
Boulenger GA (1908). "Description of a new Snake from Yunnan". Annals and Magazine of Natural History, Eighth Series2 (9): 244. (Tropidonotus johannis, new species).
Guo P, Liu Q, Zhang L, Li JX, Huang YY, Pyron RA (2014). "A taxonomic revision of the Asian keelback snakes, genus Amphiesma (Serpentes: Colubridae: Natricinae), with description of a new species". Zootaxa3873 (4): 425–440. (Hebius johannis, new combination).
Malnate EV (1960). "Systematic Division and Evolution of the Colubrid Snake Genus Natrix, with Comments on the Subfamily Natricinae". Proceedings of the Academy of Natural Sciences of Philadelphia112: 41–71. (Amphiesma johannis, new combination).
Pope CH (1935). The Reptiles of China: Turtles, Crocodilians, Snakes, Lizards. (Volume X of the Natural History of Central Asia series, edited by Chester A. Reeds). New York: American Museum of Natural History. lii + 604 pp., 28 figures, Plates I–XXVII. (Natrix johannis, pp. 106–108, figure 23).
