#albino

Hi all, I noticed this morning that my Albino Bristlenose head is red. I can't get a picture of it. It doesn't look like it's a sore but rather under the skin. The fish is eating fine and carrying on as usual. Just a bit worried. This is the first Albino Bristlenose I've had.

I just got albino Corry cat fish from petco. They got a brand new shipment, and within about 4 hours at home 2 of 6 passed away. They seemed healthy and active like the others. They each had two black spots above the eye brow. I would love to know what it could mean. Should I treat the other fish?