Hi I have a 10 gallon tank with 2 bloodfin tetra, 4 glofish, and 2 striped kuhli botia. I noticed today that my bloodfin tetras are losing their color on there fins yesterday they were bright now the color is almost faded completely. Maybe its stress? Plz tell me how to fix the problem and why the color drained out of their fins so quickly. Thx for reading!