LyndaB said:Please give us the specs: size of tank, is it cycled, readings for ammonia, nitrite, nitrate, pH.
Hard to tell, pics are fuzzy, but it looks like fin rot to me. Usually, this can easily be cleaned with good tank maintenance and keeping the water pristine.
What are you feeding?
Usually white poop is a sign of infection/parasites.
Orange? That's the first time I've heard that but again, it can depend on diet.
BlaseMrNiceguy said:Is he showing any signs of white spots on the head or possibly sides. Sounds like its possibly hole in the head/hexamita or HLLE (head and lateral line erosion). But I can't be certain.