Welcome back Archie fans!
Writer Dick Malmgren was clearly ignorant about Moray Eels. Not only are they not electric, I've never seen a bright red one either! Of course, so-called "Electric Eels" aren't actually eels at all but are in fact a type of Knifefish. I'm not sure how our bad guy, in his lovely stealth yellow wetsuit managed to capture and transport the specimen in the story without getting a shock himself!