In my case, I accidentally killed eight Emerald Dwarf Rasboras that I just received and had drip acclimated. I put them in my breeding colony of Tropheus ikola tank for the Rasboras to eat the tiny uneaten bits of floating food. There were already eight Celestial Pearl Danios in the tank of the same size as the Emerald Dwarf Rasboras. I had the lights off in the aquarium, as usual, to minimize stressing the new fish. The next morning, I found all but one of the eight Emerald Dwarf Rasboras dead. They were not eaten so I figured that the Tropheus thought they were food and mangled them without consuming them. I suspected that would happen since I released the new Rasboras at the corner spot where I usually feed the Tropheus. I have a heavy pendant light fixture with LEDs, metal halide, and compact fluorescent bulbs that cover the entire top of the tank. I push it open at one corner for feeding. I have to lift off the lighting to release new fish in a way they would not be mistaken for food. I was too tired to pick up the heavy lighting, and I couldn't see in the dark tank when I released the new fish and thought nothing of it.
I really regret losing fish under my care. They are living creatures.
I really regret losing fish under my care. They are living creatures.
