A dictionary-worthy discussion: should "fish tank" be a single word?

[MrGuppy]

Does anyone else agree with me on this?

[graye]

He's fishtanking, that's a verb right there.
Fishtank, noun, perfect description for him.
Fishtank person, that's the adjective I'd use for her.
And when he entered the room, it was a fishtankingly awkward moment.

[MrGuppy]

Fishtank, not fish tank, mate.

[kokomo]

Thanks for the fishtank-filled references, hoping for a more fishtank-tastic tomorrow.