How should I care for my new Endlers when they first arrive?

They are similar to care for as with guppies, I’m sure once they’ve adapted they will become extremely hardy and prolific for you. I usually try to feed new endlers/guppies that I receive at least an hour after completion of acclimating with mosquito larvae as a treat to trigger eating behavior in their new environment and to stimulate movement throughout their digestive tract. More importantly, this has a laxative effect for the fish to get them adapted more quickly and get their digestion back in order. You could use frozen as well, but preferably something live.