love how None of the animated appearances of moon knight wanted to get into the whole “khonshu, possessed by an ancient egyptian god” thing and all collectively went “yeah this fucker is just. obsessed with the moon”
The first time we see Gus, he has one fin which signifies a disability of some sort. Steven believes that it’s probably his sleeping disorder that has made his work life and personal life chaotic and disturbed. He’s unsure of who he is.
When Marc replaced the fish, he gets a normal, two finned fish from the store which may represent Marc’s acceptance of his disorder, and of Steven’s existence in his life. He knows it well enough what Khonshu’s servitude entails. Even though he’s more worn out than Steven, he’s accepted that major part of his life.
But in the last episode we see two healthy fish. Both Steven and Marc have accepted each other, worked in a complete synchronicity and developed a kind of fondness and respect for each other. It’s also because it’s Marc who wakes up in Steven’s bed, which leads me to believe that Steven is alright with Marc fronting to fulfill even the most mundane tasks of the day.
