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? asked in PetsFish · 1 decade ago

What does it mean when my Goldfish does this?

This is sort of hard to explain but, my goldfish was flapping/moving his dorsal fin up and down really quickly. What does that mean, is he happy, scared, sad, I don't know! I just changed his water if that has anything to do with it.

2 Answers

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  • Anonymous
    1 decade ago
    Favorite Answer

    He is probably happy and greatful that you changed his water. I love fishy and you.

    Max xx

  • 1 decade ago

    Did you change all his water? if you did this is due to shock and ph changes.

    Did you add a dechlorinator? if not then you are burning him for about 2-3 days untill the chlorine naturally evapurates.

    Did you take him out the tank? if so then this is due to shock also.

    Is the tank cycled ?

    Source(s): Pet store
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