[jagusafr]

Howdya know when a Zebrafish has a heart attack?

[Slyfox]

Howdya know when a Zebrafish has a heart attack?

He puts his fin over his heart and says, "Elizabeth, I'm coming."

[House Atreides]

“Howdya know when a Zebrafish has a heart attack?”
*****************************************************
There’s a manifest numbness/pain that radiates down its left fin.