To answer my own question - I found this thread:

viewtopic.php?t=157102&highlight=guianacara+spp

 

Sorry I've been away for a while, here is a link that describes many of the guianacara species. I actually have some geayi at the moment as well.

https://www.ciklid.org/artregister/art_ ... Guianacara

 

Great fish. Fun to watch. I have kept both Geayi and sphenozona in the past and currently have G. dacrya.

Easy to keep, relatively peaceful. Not very colorful but remind me of raccoons. Eat flakes, small pellets, blackworms, bloodworms. Secretive cave spawners.

Andy

 

I have had some sphenozona for a couple of years, and found them relatively slow growing, but fun to watch, and breed constantly. Not the best parents in the situation they are in with the other fish.