Greetings I have a 10 gallon planted tank with 12 ember tetras and some amano shrimp. I have had the fish for 2 months and they are still quite pale for embers. Most of them are slightly orange but I can't figure out why they are not coloring up more. They also will not come to the surface and eat. Water parameters: Ammonia: 0 Nitrite:0 Nitrate: <20 PH 6.5-7 Hardness: 80 Water temp: 77-78F At this moment, I am stumped. They do tend to hide in the plants and come out to the middle of the tank to eat sinking food. Any thoughts?