do not use live fish to cycle a tank it's not necessary and is cruel to the fish.
I cycled my tank with 2 damsels. They are still alive and if you want they are yours for free.
do you not believe this? the ammonia during the cycle burns thier sensitive gills. if it does not kill them it will definately hurt them.
again do not cycle the tank with live fish.you can accomplish the same thing with a piece of dead shrimp and three weeks of waiting.
then the live rock cycled the tank not the damselsI had them for two years now and they are still going strong. I had LR in my tank for over a month before I put the damsels in.
Cycle the tank with only rock. Its cruel to the fish and doesn't make sense to feed the tank (fish food) when there is already a ton of die-off spiking your nutrient level.