The carpintis (green texas) is a beautiful fish, glad you're thinking of getting one. 
It's possible for a syn and a carp to share a 75g, depending on the dimensions.
Though the main question is info on carps, so I'll talk about that.
Carps can be very aggressive or very placid, and sometimes seems to alternate between both. This is because a lot of people don't keep them properly.
Carps like to hide in reeds in nature, and feel most comfortable when there as places to hide in that's far from the prying eyes of things (you). Drift wood, caves, plants, stuff like that works.
They accept all sorts of food, though will seem to leave feeders alive. Don't be fooled, they are opportunistic and will eat guppies and stuff if one strays too close. They're just not active hunters. Of course you may find some individuals behave differently, but overall... yeah.
Carps come in a Super Green (Texas) form, which have amazing colors. Just absolutely beautiful. Most commonly are these collected from Escondido or Vontehillo. If you want to be classy, you can refer to them by their scientif names, 'Herichthys carpintis var. Escondido/Vontehillo'.
All carps have the ability to alternate their colors between blue and green at will, entirely up to them. In the Super Green Texas variety, the contrast will be very stark and will be just absolutely amazing.
When breeding, they will 'put on' a breeding dress, and you will see the back half of the carp go very black, the front half go pale bar the jaws, which will also go black. Google 'Carpintis breeding dress' and you will know what I'm talking about. Sometimes these appear during aggression, though apparently the black on the jaw won't appear in that case.
They've been said to go to 12 inches max, but the more common aquarium sizes are 8-10 inches.
They don't really need any sort of specific water parameters to live in. They're pretty much about as hardy as Convicts.
They are known to be prolific breeders, and is also said to be very, very, very in terms of mating choices - whilst some other CA cichlids will be more choosy, carps won't care if their mate is a festae or a red devil. Apparently.
Anyways, have fun keeping 'em!
It's possible for a syn and a carp to share a 75g, depending on the dimensions.Though the main question is info on carps, so I'll talk about that.
Carps can be very aggressive or very placid, and sometimes seems to alternate between both. This is because a lot of people don't keep them properly.
Carps like to hide in reeds in nature, and feel most comfortable when there as places to hide in that's far from the prying eyes of things (you). Drift wood, caves, plants, stuff like that works.
They accept all sorts of food, though will seem to leave feeders alive. Don't be fooled, they are opportunistic and will eat guppies and stuff if one strays too close. They're just not active hunters. Of course you may find some individuals behave differently, but overall... yeah.
Carps come in a Super Green (Texas) form, which have amazing colors. Just absolutely beautiful. Most commonly are these collected from Escondido or Vontehillo. If you want to be classy, you can refer to them by their scientif names, 'Herichthys carpintis var. Escondido/Vontehillo'.
All carps have the ability to alternate their colors between blue and green at will, entirely up to them. In the Super Green Texas variety, the contrast will be very stark and will be just absolutely amazing.
When breeding, they will 'put on' a breeding dress, and you will see the back half of the carp go very black, the front half go pale bar the jaws, which will also go black. Google 'Carpintis breeding dress' and you will know what I'm talking about. Sometimes these appear during aggression, though apparently the black on the jaw won't appear in that case.
They've been said to go to 12 inches max, but the more common aquarium sizes are 8-10 inches.
They don't really need any sort of specific water parameters to live in. They're pretty much about as hardy as Convicts.
They are known to be prolific breeders, and is also said to be very, very, very in terms of mating choices - whilst some other CA cichlids will be more choosy, carps won't care if their mate is a festae or a red devil. Apparently.
Anyways, have fun keeping 'em!
Even at their small size, they have pretty pearls and nice shades of blue on their fins. I'm hoping to get a pair out of these guys and am glad to read that they can be housed with other fish!