As I said in the Forum, I tried to make the fishes easier in this puzzle: both the lookdown and four-eyed fishes are pretty distinctive and quite common in public aquaria (I did check on Zootierliste, although the records of former holdings are incomplete), but not among private aquarists. @amur leopard's comments in the Forum make me wonder if I subconciously chose the lookdown fish for this lockdown puzzle
@gentle lemur I certainly thought so, although fish seem to be a routine offender in the ID gallery. Given the relatively common presence of both species in question and their distinctiveness I was surprised also.
I can also confirm both species are indeed held privately, although not overly common.
I did see that, it is indeed possible given the uncanny similarity in names!
