Does anyone know about goldfish?, my dear little fish is a bubbleye (not sure of correct name for species) her or his dorsal fin is flattened to her back when it should be upright, she is hanging around bottom of tank as well and stops moving for lengthy periods. This has been happening for 2 weeks. I only have her and another larger standard goldfish in the tank who is much more active. It is winter here and Ive put a heater in there yesterday to make it comfy.24*c I have changed water also. I also noticed that 1 eye looks glazed and dull which is a pity, she has red lipstick (little lipshaped mouth) so cute. Both are white with orange markings. Any suggestions as to what is wrong????