T. ellioti, who keeps them and how are you keeping them and with what?

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Supposedly T. ellioti is the correct name, due to one of the rare exceptions in nomenclature. Usually it is the first, older name that is the valid one (in this cause maculipennis) but there are a rare few exceptions. In this one, the genus was described based on T. ellioti. It didn't matter when Thorichthys was condensed back into Cichlasoma, so it was still maculipennis. But when Thorichthys was resurrected as a valid genus, it gave ellioti precedence. Or so say the super scientific sites that are way above my league.

You may be correct about that, although the details of your explanation (and the finer points of nomenclature rules) are not clear to me. I was going by the discussion forwarded in 1996 by Juan Miguel Artigas Azas in an article available at Cichlid Room Companion. He argues the proper name is T. maculipennis rather than ellioti.
 
This CichlidScene magazine has an article on Thorichys species.

http://issuu.com/nuttycichlids/docs/central_scene_5

According to the article, Elioti is a junior name replaced now by maculipennis. One other speices that looks very much like Elioti is Aureus, and I can't telll them apart from the pics.

Mine are aggressive to one another, but not towards other cichlids. I keep mine with African peacocks and Green Terror, which are more aggressive than elioti.
 
Yeah, I couldn't quite follow the advanced nomenclature in the argument, I just tried to summarize it. It was well above my head as well.

Apparently Miller considers maculipennis to be a jr synonym of helleri, and ellioti to be a seperate species. I am not sure if/when he will publish anything about it or if it's just his musings. Kullander lists maculipennis as the jr synonym of ellioti in his 2003 paper, but I haven't tracked it down to see his reasons why.
 
Yeah, I've read that article before. I'd like to track down Miller's and Kullander's since they were published more recently, just to see their justification of the T. ellioti over T. maculipinnis since they more about nomenclature than I do. Well, rather, why Kullander does. Miller believes them to be separate species.
 
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