It's been "known" for over 40 years that the common Jewel in the aquarium hobby is Hemichromis guttatus. It's been confirmed by ichthyologists (By both Paul Loiselle and Anton Lamboj), though much of the internet continues to use Hemichromis bimaculatus for the common jewel. https://www.cichlid-forum.com/profiles/species.php?id=1348noki said:Second is common Jewel from West Africa. Have they finally decided what species they actually are?
Yes, more then good chance the fish in question is Hemichromis guttataus. All the other jewel species are fairly distinguishable from Hemichromis guttataus.Ichthys said:They've known for a long time that the 'standard' aquarium jewel is guttatus rather than bimaculatus. It could be one of the other species (afaik) but chances are it's guttatus?