Oscar aggression

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Sniper9km

Feeder Fish
MFK Member
Sep 26, 2009
6
0
0
Long Island, NY
The last two days I have been waking up to either dead fish or fish that seem to have some sort of internal damage maybe to their swim bladders. I have a 3" wild oscar in my 125 with a 5.5" JD and a 8" severum. He leaves them alone and never bothers them. He also doesn't bother the 8 tiger barbs I have (yet, expected to be lunch eventually). I HAD 3 8" red tail barbs and 3" T-bar barbs also. Yesterday I woke up to a dead T-bar barb and a red tail barb that could not keep its equalibrium and eventually died. This morning one T-bar barb has scales missing with labored breathing and my other red tail is suffering the same issue with equalibrium. I have noticed my oscar swimming under these fish making himself horizontal and then swimming up from the bottom of the tank lighting fast and body slamming them:screwy:. Could this be enough for such a small fish to cause this kind of damage to larger ones?


On a side note my large severum goes to the damaged fish and tries to help them swim correctly. I thought that was pretty funny going along with their "peace keeping" reputations.
 
Fish show signs of being attacked + you've seen him attack them = what's the mystery?

If your water parameters are okay, and they show no sign of illness, then that's probably what happened.
 
my sev's are far more aggressive than my baby of an oscar.. sounds like youve got it the other way around..
 
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