Plant Being Damaged By What...?

[mbeer21]

In my tank I have one big Amazon Sword, a smaller one, and a few 'baby' ones. I also have one Anuabis attached to driftwood, and an unknown plant.
Many leaves on the large Amazon look like this

The smaller Amazon and the other plants are perfectly healthy. Is it a fish doing this (stock listed in my signature)? Or snails, or something else?
Thanks for the help

 

[ian]

That to me just looks like an old leaf, it need removing really because as it rots it will be release ammonia as it's decomposing. The leaves around it look OK at the min.

PS, that Shark will abolish those plants as it gets bigger. I'm sure you have been advised that Bala sharks don't really suit a 130l tank.

 

[KittyKat]

My Ancistrus triradiatus eat Amazon swords, every time there's a new batch of young, the whole sword goes from lush green to that in a matter of 1-2 days. The plecos get algae pellets twice a day to discourage sword-eating, but they probably don't make it to the fry, once the adults are done with them. It could be just an old leaf, they also look like that.

Edit: twice per day because I have 7-10 adult plecos in there, not two. For only two plecos, you shouldn't be feeding any more than once per day.

 

[mbeer21]

Alright, I've cut those leaves out, thanks for the help there.
Yes, I know about the shark He was a gift when I was new to fish keeping, and my LFS won't take him as I didn't get him from there. When I move to the city I'll be able to find him a new home easily; it's a struggle here in a small town.

I feed my plecs wafers every 2 days, as they also eat sinking pellets that the other fish get.

 

[KittyKat]

Actually, after I got home, I checked the leaves and the plecos eat them down the centre, not around the edges, so the damage is kinda inverted from what you're getting.