liquidsquid,
Had you not led with only koi and goldfish ... I might have suggested the mirror variant of the common carp. Large scales interspersed with scale-less areas are common in that variant. This one looks very similar to examples of the mirror carp fingerlings that I have seen on you-tube. but if mirrors weren't there then I defer to koi or koi/goldfish hybrid.
Not sure what age (dah)/size scales develop on carp and koi but seems like they might start out scale-less and later develop them but still I thought the scales were large and reminiscent of mirrors.
Last edited by jpsdad; 08/10/22 09:01 PM.