Discus Agression?

wildechild_01

Fish Crazy
Joined
Sep 10, 2009
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Location
Calgary AB Canada
OK so my 4 Discus have been doing amazing lately i have 2 x Red Pidgeon Bloods and 2 x Blue Diamonds. I have noticed Some peppering on the Pidgeons but decided it was nothing too serious as i have Crushed Granite for a substrate and a black backing on the Tank and according to reading the Peppering is to some extent simply a reflection of the darker colours in the tank. Today however i notices a bit of Fin Damage on the Tail fin of one of the Pidgeons.. i spent a good 45-50 min just watching the tank to see if i could figure out what was going on, low and behold the other Pidgeon is acting quite agressive towards the one with the tail damage.. i also noticed that there seems to be some fading in the red lines (not sure how to describe them different) around the damaged tail, now i cant honestly say the red is dissapearing just that i noticed the lack of red there, where there is red on the other one. I also noticed some aggression between the Blue Diamonds, as well as very limited aggression between the two different sets... I have spent hours and hours watching these fish over the last 2 months since i got them and have never noticed this before... I fed them thinking maybe they were hungry but that has not seemed to help at all... now that the lights are off they have all settled down a little.

Water tests show everything is good in the tank, and Temp is good, if anything it may have gotten a little warmer today what with the sun finally comming out. So not sure whats going on here, is this agression normal?? what kinds of things can i do to stop it? Any advice would be appreciated.
 

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