Goldfish

hi, mrs_white...i think the goldfish wont to fight with each other lo.i ever feed it with other but wont fight. i got try that goldfish will eat smaller than the goldfish. but everytime i feed goldfish then will die after few month..dunno why lo..haih...

I've been keeping fish for a good number of years and i've never experienced goldfish fighting. Do you keep janitor fish in your tank with the goldfish? It's quite common for them to bite or should I say suck goldfishes, that not only do they damage the fins but the scales as well. Another probable reason for the bitten off appearance is that your fish has tail rot and antibiotics should be applied to the water (you can buy that at your pet store). The big white spot is most likely anchor worm erupting from under the scale(Ick are many small spots and they occur mostly at the fins and tail). This is quite common in goldfishes and medicine for this is also available at your local pet store.

The white spot on the one is probably Ick which is a disease that fish get. You should get some treatment for that. It's also possible that Ick ate part of the other one's tail as well. I've never heard of goldfish fighting, but I suppose it couple probably happen.