I've had my bristlenose pleco since I got an established tank from craigslist about a year ago. I rarely see this fish, I know they are nocturnal, but there was never any indication he had been anywhere but hiding in the bogwood. No change in the algae on the tank walls in the morning, when I clean the tank the only place I find the nasty pleco poop (dark brown from the bogwood) is around the bogwood. A neighbor of mine who has had lots of community tanks suggested I get another pleco, which I did about two weeks ago. The new pleco (2" common) has been out and about, the glass is cleaner, it's been really neat. Last night he/she was fine. Happily scraping the algae off the front of the aquarium. Today, I was moving my female platy to a small 1 gallon that I have as my quarantine tank. I know I need a bigger one, but this is what I could afford when I needed it. I thought all my platys were male until I noticed a fry this morning. Poor girl was being hassled pretty bad and it looked like she had a bit of scale damage. In the process of getting the platy out, I accidentally brushed up against the new pleco and instead of fleeing, he just flinched. After looking closer, I noticed some fin damage. In order to get a better look I decided to put him in the 1 gallon even though I know it's not big enough for him. That's when I noticed how bad the damage is. I don't see any cuts or scrapes, but he's not attaching to anything and seems like he is having problems moving around. He's just dangling around or laying on the bottom. I added some salt, but the damage is soo bad. Is there anything else I can do and how did he get this way? Do plecos fight?


