Fowlea “piscator” — Checkered Keelback
Also known as:
Chequered Keelback
This species complex has enjoyed a wide range of genus homes since it was first described in 1799 (!), including Hydrus, Coluber, Natrix, Tropidonotus, Nerodia, Xenochrophis, Amphiesma, and now, finally (?), Fowlea. The move to Fowlea only happened in 2019.
Pidurangala, Matale District, Central Province, Sri Lanka—August 4, 2019
Checkered Keelback (Fowlea "piscator") Checkered Keelback (Fowlea "piscator")
This frog- and fish-eating snake mostly stayed underwater while my guide Udaya Chanaka and I waited for it to make a photo-worthy appearance. I don't think remember seeing any fish in this rock pond, but there were plenty of frogs.
Online references: