Kullander's Groupings

A new thread:
Cichlasomines: Acaronia, all Central American genera, Astronotus, Australoheros, Caquetaia, Chaetobranchopsis, Chaetobranchus, Cichlasoma, Heroina, Heros, Hoplarchus, Hypselecara, Mesonauta, Pterophyllum, Retroculus, Symphysodon, Uaru.

Acara: Aequidens, 'Aequidens', Bujurquina, Cleithracara, Crenicara, Dicrossus, Guianacara, Ivanacara, Krobia, Laetacara, Mazarunia, Nannacara, Taeniacara, Tahuantinsyoa.

Geophagine: Acarichthys, Apistogramma, Apistogrammoides, Biotodoma, Biotoecus, Geophagus, 'Geophagus', Gymnogeophagus, Microgeophagus, Satanoperca.

Other: Cichla, Crenicichla, Teleocichla.


I agree with the opening comments on Retroculus:
Retroculus: This one stumps me. In a newer paper, Kullander provided DNA evidence stating that this genus is a Cichlasomine, indeed much closer to Cichlasoma than to any Geophagine genera. Despite having the gill arch needed for inclusion for the Geophagines, as well as the Satanoperca like shape ... these are now believed to be a result of convergant evolution (different fish in similiar type areas devoloping similiar evolutions) versus direct evolution (descended from eartheaters).

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