Oscars,

[biggie]

I have two Oscars one tiger one red, they have a 150 gallon with 40 gallon sump, 0 ammonia, 0 nitrite less than 15 ppm nitrate at any time. the question is my red Oscar has been sitting on the bottom like a bird nesting for 5 days and hasn't touched her food in two weeks. my thought is maybe she swallowed a rock. she's huffing and puffing and is kind of swollen. there both mature, 2 years old, i chose them both, they vibrate tails and get along like husband and wife. my tiger Oscar even seems worried about her. but i dont now if there male and female. or if she sick or what.