I'm not sure - the ones i have look very different then your posted pictures - i posted these in the geo thread about 2 weeks ago - and even with the lighting difference and possibly age difference they look unlike yours - mine are currently 4 1/2 to nearly 6 inches large with one distinctly larger - i presume they have another year to grow till they reach maturity. I keep them at 83 ec 22-24 and ph 4.7 (blackwater condition - the higher temp is because they are with my wc discus) - here are some pictures for comparison:
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First even at this young age they have developed much longer filaments which your lack; the red splotches in the body is a bit of unknown long term - wetspot thinks it is an age thing that will change but i'm not sure; and the stirpe pattern looks more exensive though that might be due to lighting. Still even the dorsal fins are showing long filament which your fish lacks
btw - you mentioned another G. spec Caqueta in your original post - I assume you mean this Geophagus species? They share the tank with G. spec Caqueta II



