How to Tell if a Goldfish Is Really Dead

Though it can be difficult to distinguish between a sleeping goldfish and a dead goldfish, there are numerous ways to determine if the fish is truly dead. While a goldfish can simply die one day, he may appear sick in the days leading up to his death. A dying goldfish may remain behind aquarium rocks or plants, as most animal species will attempt to "hide" when ill or dying. A fish that does not eat is also a sign of illness or impending death. Take measures to ensure the fish really is dead before you remove him from the tank.

Things You'll Need

  • Fish net
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Instructions

    • 1

      Gently tap on the tank wall your fish is closest to to see if the fish responds. Wait a few seconds, then tap again. No response can indicate the goldfish is dead, especially if he has not moved from the same spot for a day or more. If the fish floats to the top of the tank, he is dead.

    • 2

      Look at the goldfish's gills. He is dead if the gills are not moving.

    • 3

      Observe the pupils of the goldfish, if possible. If they appear gray in color, the fish is probably dead. Eyes that appear concave rather than convex is also a sign of death.

    • 4

      Look at the skin of the goldfish. Though goldfish skin colors will fade somewhat while they are at rest, a dead goldfish will appear white. This indicates the fish is dead and is starting to rot.

    • 5

      Use your goldfish net or other implement to gently nudge the fish. Perform this action as carefully as possible to avoid startling the fish in case he is asleep. A fish that does not respond to gentle nudging is probably dead. You can also opt to lift the fish out of his tank with the net. If the fish doesn't struggle, he is either dead or dying.

    • 6

      Remove the goldfish with a fist net once you are sure he is dead. A rotting fish will contaminate the tank and cause health issues for any other fish in the aquarium.