^. As above. All the different varieties such as Chairel, Vontehillo, Escondido or whatever are just local variations. They're all Green Texas, and they're all fertile.
'Texas' refers to Herichthys cyanoguttatum, a different species.
The Red Texas (both conventional and home-made mixes) are a hybrid of either the texas or green texas and some other species of CA cichlid to produce a hybrid that has both pearlings and is red. This is where infertility could occur.
The Blue Texas is less of a name of a specific species, but rather of any Herichthys that's... blue. So kinda like Red Texas, except it is commonly used to refer to both the texas and green texas because they both can be blue.
In fact, many super green texans like to shift colors between blue and green, depending on its mood.
