pale

I got 4 new rummy nose tetras on the 30th. Their noses were pale in the bag, but their noses were fine in the store. When I brought them home and put them into my 20 gallon, they recovered their red noses except for one. Today it is still very pale. Is this just the one being stressed out? Or is...

For the past 2 weeks or so, I've noticed something is wrong with my paradise gourami. I've had him about a year and a half now and he was always the boss in the tank. I have a 30g tank with a larger pearl gourami and a pleco with him in. Over a matter of a couple days he started looking...