Please read before posting so that we may better help you

[Piscesgirl]

We are committed to helping you with any fish emergencies you may encounter; to assist us in helping you with these emergencies, we ask if you would please provide the following information in your post in this forum. If you do not know some of the information, that is ok, but please indicate that as well.

1). Ammonia/NitrIte/NitrAte level?
2). Amount of time tank has been running?
3). Gallons/liters/size of tank?
4). Frequency of water changes, and how much water is changed each time?
5). What are the occupants of the tank?
6). Well water/city water and do you treat for chlorine/chloramines?
7). What products/chemicals have been used/added to the tank?

[Azrien]

Could the following please be added in some way/shape/form?

-pH
-Detailed description of any behavior/color changes along with a description of the animal's typical behavior
-Dimensions of the tank if nonstandard size (20H is very different than 20L, as is a 60 hex and 60 regular)
-Hardness/softness (optional, but may help especially with more delicate species)
-If this is a problem where aggression is a possible cause, what sort of cover/territory is available
-If possible, please attach a photo that best shows the problem.

Some of those may not be necessary in many cases, but some fish are delicate enough to require a certain water hardness or perhaps there are aggression problems due to a tank having bad dimensions (I don't think keeping a lot of aggressive fish in a normal 60g is quite the same as keeping them in a 60 hex.. less room to swim away!)