These are rarely seen river Tengu. They conjure up mysterious wisps of light and cause a great deal of trouble for fishermen. Stealing their catch, breaking their equipment, and possible drownings. Their physical appearance is practically unknown. So, this drawing is merely theoretical. 

I’d like to think they’re a type of Kotengu, because of their trouble making schemes. I’d also like to add a reason that they’re rarely seen is because of their camouflage. I used a Eurasian Bittern as a basis. They’re a funny looking water fowl that stretch out their necks and stay very still to hide. Well, this guy was just about to hide so his neck wasn’t so stretchy stretchy.