Yesterday---we added water to the tank with AquaSafe drops almost immediately the fish huddled at the top of the tank next to the filtration pipe all in a clump on top of each other --none have died but something is wrong---they eat but none are swimming around just staying in a huddle at the top and in the corner--the don't seem to be breathing fast just normal---Please help-----
Did you just add these fish to your tank. They could just be getting use to their new environment. Also Annastasia has a good point. What are your water stats?