This is like a mini-headcanon post because I am going through it™️ (what else is new) but...
Like, do you think Azul is just cursed with eel magnetism? I believe in Canon it's said that both Octopi and Eel merfolk are uncommon but I think it's kind of funny that Jade and Floyd both looked at Azul and were like "Yup, I'm going to bother THAT ONE into being my friend because he's fascinating", but I think it would be even funnier if it just extends to all Eels.
For example, Jade and Floyd's family love Azul. They treat him like he's always belonged there and also go out of their way to treat him like a member of the family, including sending him trinkets in the gifts they send for Jade and Floyd.
Actual Moray Eels just follow him around when they see him. Wild morays just sort of take shelter in his tentacles if he sits still too long or try and worm their way under his arms and like big cats trying to get pets (because morays seem to enjoy them). If he were ever to go to an aquarium, he'd have to deal with the Eels in the enclosures swimming up to the glass and following him along beside him until they can't anymore.