I have a Dwarf Gourami that has been laying at the bottom of the tank for almost a week. He is still alive and breathing. I don't know what to do. Is he suffering? The last time I had the water tested the ammonia level was high and I removed 25% of the water. Hew as in a 10 gallon tank with 2 others. He has now been in a 60 gallon tank since Sunday. Should I end his suffering?