That's so damn funny because that's exactly where I downloaded the song from after I heard it. It was identified as Leftover Salmon and I had no reason to doubt it until I actually heard Leftover Salmon and realized it wasn't them. I never went any further trying to figure out who it really was and whenever I would see it I would just think to myself "Not Leftover Salmon.". Sometime after Google began to rule the world I thought to myself "I'm going to figure out who did that cover." and Phish was all the first results. Again, no reason or knowledge to doubt it.
Now, years later still, to celebrate sinko the mayo, I have actually learned who did the song!!!! Thanks @jbutler !! lol
De nada. Leftover Salmon is a name I haven't thought of in a long while. Saw them a bunch of times in the southeast in the late 90s. Definitely one of the better of the second tier jambands of that era.