hey, i'm(aquaticloch) on apistogramma.com and saw you had a similar question :lol:, imo trifasciata prefer larger tanks and 2 spawning sites is probably too little, borelii are great fish much more timid than trifasciata but likely be a bit more aggressive.
Trifsciata can get to be 3.25 inches whereas the borelii usually top out at 2 inches, you may need to remove one of the trifasciata if the pair has a dispute but a 20 gallon tank would be likely fine with disputes between the borelii. Alternatively the trifasciata would be better parents in a community tank, and they have been spawned for a very long time because of this. i hope this helps and good luck, they both have great personalities.
Trifsciata can get to be 3.25 inches whereas the borelii usually top out at 2 inches, you may need to remove one of the trifasciata if the pair has a dispute but a 20 gallon tank would be likely fine with disputes between the borelii. Alternatively the trifasciata would be better parents in a community tank, and they have been spawned for a very long time because of this. i hope this helps and good luck, they both have great personalities.