hi, i have a Leucistic and about a week ago a got some small feeder fish, wasnt really interested and they were eating his gills so i took them out. i noticed today that he has gone kinda purple, like he has no oxygen or something, he is really pale and the veins in him arent pink anymore, they are a deep purple. also, his remaining gills are purple as well. he has been spitting his food out as well the past few days, except maybe 1 piece - beef heart cut into small strips like worms. not sure if his colour is normal.