At breeding time the males develop white spots on their gill plates and pectoral fins.
If the spots are on the fishes pectoral (side) fins, and if the fish also has spots on its gill plates, it is a sign that the fish is a male and it is comming into breeding condition. If the spots are on other fins too then the fish could have "White Spot" (Ich) and probably needs chemical treatment. Pet shops carry good reliable cures for this problem.
Probably "ick". It needs to be treated.
They can only be sexed during breeding season when the males develop white spots on their gill plates and pectoral fins. The females only get a bit chubbier.
take it out
no there arent any
Not a goldfish anymore.
It is possible that the one doing the chasing is a male who wishes to spawn. Check out its gill plates and pectoral fins and see if there are any white spots visible. If there are white spots visible, then that is what is happening. Goldfish come into breeding mode/condition when their water gets above 65F and goes towards 70F. That is usually in Springtime.
The female will become very round and swollen with eggs. The male will develop white spots called "tubercles" on his gills and pectoral fins.
Goldfish can only be sexed at breeding time when the males develop white spots on their Gill plates and sometimes their Pectoral fins too. The females simply get chubbier as they fill with ova (eggs).
All goldfish are sexed the same way. During their breeding season the males develop white spots on their gill plates and pectoral fins. The females simply get a chubby tummy.
Goldfish can only be sexed during breeding season (springtime). At this time the males develop white spots on their gillplates and pectoral fins. The females simply get chubbier around the abdomen prior to spawning.