attacked

Hello I have a Julii Cory Cat who last night I found with light grey looking spots and damage to the dorsal fin. I was wondering if anyone can tell me if you think one of my other fish (female tiger barb and a male Mickey Mouse platy) may be attacking her or could she be sick with something. I...

Hi, I've had 'Ping pong' for over a month and he has been a bit bullied by the other fish, but last night he was pretty badly attacked (do not know who the attacker was). His fins are shredded, he has a several cuts, a damaged gill and half his scales are either missing or badly damaged. (I'm...