Originally Posted by VTonic
Hi, I have a 125 gallon freshwater aquarium that is fully established. In it i have 1 discuss who seems to have become super aggressive to the smaller fish. I watched him rip a bunch on neon tetras apart before i could remove them all and give them to a freind to save them from being eaten. Has any one else ever seen discuss act so aggressive before? This is new to me since when i bought him he was in a tank with other discus and guppies and they were all doing fine.
Would click on the Discus shaded in blue and review the needs of this fish were it me.
Discus are social fish that nearly anyone who is ,or has kept will tell you need to be in groups. You could house seven or eight of these fish easily in your tank.
They are cichlids and as such ,,many will snack on smaller fishes.
The Discus need temp between 82 and 84 degrees F due to their high metabolisim. When kept at cooler temps,growth slows,digestive problems can occur,and fishes immune system is weakened often leading to sick fish.
The neons would not last long in temperatures that Discus require for they very much prefer cooler temps.
Much of this info would have been revealed to you with a little research before you purchased the fish but I understand impulse purchases having done so myself on occasion.