Cory aggression ?

vanillarum

vanillarum

AC Members
Jan 4, 2008
1,230
0
36
Mass.
Short story and question: a while back I bought 12 sterbai cories. I put 4 in my 10 gal that also houses 3 L260s, 3 or 4 ottos, aand a couple sawbwa resplendens. The other 8 went into my 40 breeder with 1/2 doz each pygmy cories (hastatus and habrosus), 4 adult L046s, and 11 sub adult L046s. A week or so ago, I noticed that 2 of the cories in the 10 had tattered tails and top fins. I thought it may be the ottos, based on some things I have read. I put 1 of them in the 40, figuring it would be fine. I couldn't catch the other 1, so it stayed in the 10. Tonight, while feeding the zebras, I noticed 2 cories in the 40 have the same tattered tails and fins, only more so ! So my question is, do cories fight with each other, or am I missing something ? the only thing common to both tanks are a few assassin snails. Could they be the culprits ? I would think that highly unlikely, based on the difference in mobility. Anyone have any ideas ? I'm stumped. Thanx for any and all help. Sorry to be so long winded !
 
What are your water parameters? Is it possible that the plecos are chewing on them? I have 14 corys in my 40G and there has never been even a hint of aggression.
 
Cories are totally non-aggressive, even during spawning. Looking at what's in your tanks I cannot imagine what could be doing it. And it is definitely not the ottos, and from what I've read about sawbwa resplendens they are not nippers. Could plecos do it? I seriously doubt it, they wouldn't be able to nip, their mouths aren't conducive to anything but sucking. A pleco would tail slap the cory. So....could it be the assassins? That I don't know.
 
are your tanks decorated in any way? heavily planted perhaps? it could be that they are crashing through stuff in the course of their day. water parameters would be a good thing here though, as poor water quality can cause problems for cories
 
You must log in or register to reply here.
AquariaCentral.com
Top Bottom