Oh wow and holy cow! I just saw the regulator. That thing is gorgeous. What is the little hose or wire on the output?
Yes that one. Of course, the regulator is in a complex controller system. I got to get out of the old school way of thinking.
Black is suggestive of fin rot. Remind us what you have in the tank?
I'm not sure about the black, but my male Angel damages his lower fin like that on a weekly basis, and then regrows it within a matter of days. I have no idea how he does it or what causes it, but his fins are black so I can't tell if it looks exactly like that. It seems to happen frequently if he spooks during a water change or when I open the cabinet doors, but I never see him actually hit anything...
I wouldn't call it a crime just plain feeding behavior by the EPA.Am not not sure what to do. I am thinking it was more of a crime of opportunity than a murderous streak as I've never seen anything remotely like that from one of the EBA.
Maybe you could lure them out with food? Fish are too wily!


Have you figured it out?
The tank is looking great! Are you running co2?
Could be bad stock, but if I recall correctly, you also added a lot at the same time and really close together - which can be stressful and cause issues with disease. Next time, I would QT them for a few weeks and add them in smaller groups (so maybe start with 8-10, fully QT, add to main tank, and start again).
What do you really want? I think you do have room for a group of Geos if you wanted.
The gold severum and threadfin acara do not need to be in groups of five... Solo is fine. Severums eat plants though...
Festivums might also eat your small schooling fish, just so you know. Mine have eaten many of mine.