Evening.
Their Heros efasciatus, and unless you know their heritage / catch location, they fall into the lovely catogory of "The green severum"
The colouring is simply down to stress im afraid.
Even sevs from the blackest of waters dont lose pigmentation (like the Panda Uaru did) The nearest they get are H.severus, which goes a lovely pale white when its relaxed, and im afraid the anal fin (first 3 spines are clearly fused, indicating a menmber of the Notatus Complex) and head shape are all wrong for that.)
At a guess i'd say they where from the belem line (i see a little "Y"ing on the stress bars, and no really strong body markings, as seen on the Manause Line (these are the two base sevs that made the hobby, and have been interbred countless times down the line)
Nice looking fish and hopefully they settle down and colour up properly, but im afraid, their nothing rare
