Guianacara identification

[qbsztyk1]

Hi,
I have a pair of Guianacara, fitted together in a couple of groups of fish. Fish come up to spawn. The male is currently about 10cm, 8cm female. Until now I was convinced that I have a G. geayi, but a friend drew my attention that my adult fish, the first dorsal fin spines are in black, with G. geayi should disappear, but it is maintained in G. stergiosi in all sizes. So I started search for the truth After seeing the various photos and descriptions, I'm not sure, but I suspect that my fish, it may be G. stergiosi, also read the article below I come to this conclusion:
http://www.rom.on.ca/collections/curato ... ia2006.pdf
Unfortunately, I do not know the history of their origin, I do not know exactly where they come from.
So I ask you for help in identification. Thanks in advance.

Pictures when they were young:




here are a little older:














And here is the most recent video of pair with kids:
http://www.youtube.com/watch?v=pXK_UDEY ... detailpage

Greetings
Jakub

[smitty]

They are a species that I have very limited knowledge of, but they look very good.

[DRE]

Lovely photos Jakub, I'd say that they are not geayi, due to that in the photos were they're older the dark on the dorsal fin lappets are stronger. My fry lost this black coloring when they where around 3-4 cm.

Also, the mouth is a bit pointier than mine atleast, a look I've mostly seen in stergiosi.
I would ID these as Guianacara stergiosi, possibly young owroewefi.

Have a look here as well:
http://www.ciklid.org/artregister/artre ... e.php?ID=9