Guianacara are neat fish ... think like a cross between Gymnogeophagus and keyholes. Most common species is Guianacara sphenozona, the one usually sold as geayi. It's rare to find real geayi, like the real Geophagus surinamensis they are only found in French Surinam, an area that's not commically collected. These guys are acaras that think they are geophagus, I'd kept them just like Gymno's but of course in warmer, consistant water. Those ones you saw were probably full grown, largest males I've seen were 6" or so. Had them way back (circa 1994 or so). More touchy than other acaras, but no so bad as Satanoperca or gymno's though. Dutch Dude has some Rio Caroni species I believe, so if he isn't too busy I'm sure he will pipe up. I remember someone else here on the forum has bred them, but can't remember whom. I kept mine like keyholes, they did well but never spawned for me. Didn't have them long though, traded them back to the LFS I worked at.
If he's getting them from French Surinam, then they'd deffinately be geayi. And if he has a connection into that country that no one else has, then get us some real Geo surms too!!!
They are deffinately cool looking. I'd get them if they really are geayi, just to say I was the first person in the US to breed them!! :lol: They really do look like a cross between an acara and a geo, very unique profile. I wouldn't mind trying them out again, but have many more species on my list first. Still a good deal can always change that list, and never before seen fish can deffinately alter it.
I keep a group of 6 Guianacara stergiosi (rio Caronii) in a 90 gallon tank. They are lovely fish only a bit shy. Their colors are not the most interesting but what you rarely see on the pics is the iridescent on their scales. Guianacara are rarely seen and most likely becouse of their dull coloration. Luckily they compensate in behaviour. I never seen such a peaceful cichlid! Even Bolivians show more "aggression" while Guianacara grow to abouth 5 to 6 inch. Males can develop a head hump while females tend to be smaller. At young age it is almost impossible to sex them. They are social fish that do best in small groups of 6 or more. They need caves and lots of driftwood to be happy. Howler also keeps a group of Guianacara and his fish spawned recently. You can find a post abouth this a couple of pages ago. Guianacara are quit tolerant if it comes to water qualety. Best is to keep the temp between the 25C and 30C with 27 as optimum. In nature the temp can raise to 32C but I would not recommend that. Males quarrel a lot over territories but this is realy peaceful compared to other cichlids. Maybe you did read I bought some discus and are growing them out. Once they are close to adult I will put them in with the Guianacara. They will be an interesting mix. The beauty of the Discus and the funny behaviour of the Guianacara. If you want an interesting mid sized peacefull cichlid I do suggest the Guianacara. One thing you should know abouth them,...they dig caves! They will destroy a planted tank!