@Caribbean Flamingo it doesn't even looks similar. It obviously have very clearly different patterns, so different that its very obviously a different species.
The fish in that photo clearly lacks the very distinct black spots with yellow blotchy margina near the gills and even the black and red patterns in the base of the tail. That fish you got from an Instagram post of a fish store is indeed a true Lugubria johanna, atleast likely so, but obviously the patterns are very different from the one you take a picture of.
If anything, it took me second to just use a Google Lens to tell that this MIGHT be Crenicichla sp., probaby Crenicichla lenticulata though that fish you saw looks too plain and didn't have the eponymus black spots in the head. With captivity, hybridization are also to consider.
Not a very good match for C. lenticulata really - it's lacking spots entirely. Also I wouldn't trust Google Lens for accurately identifying a notoriously complex and confusing group of cichlids.
@Great Argus correct, I wasn't even 100% sure of that ID either as I write later in the comment, I think its just the closest and not the actual one.
Google Lens for me certainly should be used to find the closest ID to pinpoint exactly what taxa it could be, obviously they're not 100% reliable. If I was the OP, I'll try putting it simply as sp. first.
