attacked

I had a 10in oscar which was originally in a 30gal grow out for my 400gal pond. Today it took enough attacks from my jag in the pond and died. My dad blames me for putting the oscar out the 30gal while I obviously, just tried to do the best for it. I've already told my dad to add structures to...

My 5” Tiger Oscar tried to eat my 5” Silver Arowana. This is my first Arowana so I’m looking for advice from experienced keepers on treatment. They were in a 125g but I have since separated the Arowana to a 75g by himself. The pellets are from trying to get him to eat.

My juvinile arowanas tail has been completely bitten off anal and dorsal fins nipped and damage to scales aswell had him since saturday been completely fine til i woke up this morning and found him like this what do i do, hes around 4-5" in a tank with a 2" jack dempsey, a 2" electric blue...

Hey everyone, I've got a african lungfish, around a foot long now, and for some reason today he has been attacking one of the airstones in my tank. I noticed he did it this morning, and when I tried to get it on video he stopped. When I came back just now tonight, it seems he has made...