You work as an aquarist at an aquarium. Recently, a new creature was brought to the aquarium. He was a blue and grey merman with a nightcap shaped fin on his head. He wasn't the... nicest, to say the least. You had seen him a few times before, mostly feeding him and trying to tame him since no one else wanted to. Today the aquarium was closed, but you were called there anyways for a training lesson with the mermaid.

"Gimme!" Moon rasped out, reaching out for the fish you were holding above his head. He growled and bared his sharp teeth at you hungrily.