So, if I follow this whole thing, you want to use a hormone to calm a fish down to help induce breeding.
Isn't breeding usually induced by hormones causing the fish to get excited?
Blue Ridge Reef has a very sensible suggestion. Have you considered trying his advice?
Yes, I always thought it was to induce breeding. But my thoughts were just like with my cat and the pheromone spray to calm her down (in the diffuser, etc) and hoped there was something for fish.,
Not just to breed.... She is so aggressive to everyone (not just him) that she has become an issue in the tank. She is perfectly healthy, in better shape than I could imagine- fastest and biggest with a ferocious appetite like she is part shark. Therefore she has become a bully.
I get near the tank, she bolts (while others come for food) then steals the food and bites the other fish.... 24/7 attacks all the other fish, refuses to breed unless with a larger male (which defeats the purpose as I do selective breeding and she causes total mayhem in the tank). Since she is so large, I plan to mover her to the new tank when it is done cycling.
So she stays now in my quarantine tank with the male and two other females and has been there for a couple weeks. But she terrorizes them and I dont have another tank (she is too big for the other ones as they are already stocked).
I was hoping to find a solution to calm her down
I took a photo: the other fish hide from her... and she does look like a shark!: