I humbly present my thesis
(SUBMISSION FROM @clingynepenthes )
Part 1:
https://clingynepenthes.tumblr.com/post/657327568987488256/victreebel-the-moray-nepenthes
Part 2:https://clingynepenthes.tumblr.com/post/722103068771205120/victreebels-japanese-name-utsubot-is-clearly
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(ADDITION FROM REV:)
There’s also the fact that Japan seems to associate eels with pots, as seen with this youkai from Yo-kai Watch: https://yokaiwatch.fandom.com/wiki/Croonger
I’m not sure why, though, and at present I’m having difficulty finding anything about it (thanks, Google). I think I remember something about it being used to trap them? It would be similar to the current method used: https://web-japan.org/nipponia/nipponia21/en/feature/feature04.html
…But, now all I can reference to are these wicker traps from the Edo era :( http://www.unasige.com/unagizatugaku-tennen-gyohou.html











