Reeeeally LONG WORM in a 20 gallon tank

[GoFish]

ID please... if someone knows
The worm in the image appears to be 2.5 inches long, and has only come out about 3" total until tonight... I fed my 4 fish something different tonight (bits of squid, shrimp and scallops) which really seemed to turn this bugger on. It normally just pokes its head out once in a while (i've seen it 6 times in 4 months but tonight it made its way down to the sandy bottom and crawled along the glass... ITS 14 INCHES LONG!!! And only 1/8" wide max

I doesn't have any bristles, only L-shaped yellow legs and it body is red/orange with yellowish bands, I dont see any eyes or mouth, it just appears to taper (though I'm not saying it doesn't)

Should i keep or kill? Thanks in advance for anyones time!



My apologies in advance for not posting this in the inverteb column. I'm new and couldn't figure out how