what does orange stringy poo mean?

[niki000]

My coral beauty angelfish has long orange-ish stringy poo several times a day It appears to be "stuck". I can't seem to find a clear answer as to whether or not this indicates parasites or something else. Otherwise, she is eating and behaving normally. What do you think?

All water parameters are normal:
Ammonia: 0
Nitrite: 0
Nitrate:0
Salinity: 1.023
Temp: 76-78
water flow: Moderate
Tank: standard biocube 29