Disease Advice Needed

[gyillmard]

Hi. Ive six cory sterba and one, a male, has had for well over a week a small lightish yellow patch at the top of the front ray of its dorsal fin, about the size of a pinhead. Its eating fine and has its dorsal fin errect and it is behaving like a normal cory. There was no improvement with a course of treatment by the UK brand Protozin. The water checks out OK. The others are fine, though they did get hassled, and one bitten anal fin - same fish- till I got rid of my red eye tetras. Its hard to get a good look but it doesnt look like ordinary fish fungus and it is not white spot or a large parasite. Any advice? - especially about medication. Thanks in advance! Gyillmard

 

[5teady_2012]

All i can realy help with here is, you need to half the dosage for corys.

 

[Cory_Dad]

Hi. Ive six cory sterba and one, a male, has had for well over a week a small lightish yellow patch at the top of the front ray of its dorsal fin, about the size of a pinhead. Its eating fine and has its dorsal fin errect and it is behaving like a normal cory. There was no improvement with a course of treatment by the UK brand Protozin. The water checks out OK. The others are fine, though they did get hassled, and one bitten anal fin - same fish- till I got rid of my red eye tetras. Its hard to get a good look but it doesnt look like ordinary fish fungus and it is not white spot or a large parasite. Any advice? - especially about medication. Thanks in advance! Gyillmard

A picture would definitely help here.

Also, you should be posting in the emergencies section, not here.