i did it multiple times with success in smaller tanks providing plenty
of cover for all the fish in the tank to hide and what not your over
exaggerating them it's only convicts and they stay small compared
to a jd. given enough hiding spots and objects to break the line of
sight it can work out and jd's are tough pretty sure it can stand its own.
ive bred multiple different species of cichlids and even bred a festae
pair and amph hybrid pair in a 240g before. each pair on each end.
i wouldnt add any more fish in a 55g...
yea that's what i'm saying...... a breeding pair of Convicts will dominate a tank, but IF you can do a JD w/ them it needs to be at LEAST twice their size. I have hade pairs of Convicts kill cichlids notorious for aggression (pound for pound) - JDs (different JDs w/ different pairs), Salvinis, Jewels, and then of course there were Oscars MUCH larger but Oscars simply are NOT fighting fish.
A Green Terror would make a better tank mate than a JD.....more active and less shy and reclusive. But again, it must be considerably larger than both Convicts by 100% mass. I would only ever put a breeding pair of Convicts w/ a mixed community of much larger more aggressive cichlids. 2 of my adult females (3") share a 55g w/ a 5"-6" male GT, a 5" male Sveni Pike, a 4" unsexed Jack Dempsey and 2 male Firemouths (3.5" and 4"), plus a few larger-ish catfish [(5"-7") a Spotted Pimelodus, Lima Shovelnose and 3 Colombian sharks]
I also have a harem of 1.7 Pink Convicts (1"-1.5") in a peaceful SA (mostly) community w/ 3 Rainbow Cichlids, a pair of Cichlaosoma cienagae (?), 1.0 Blue Acara, 0.1 Geo. albelios, 0.2 Jewels, a Rainbow shark, Black Shark, 7 Corydoras, Clown and Bristlenose Plecos, 2 Asian Bumblebee cats, 4 Spotted Raphaels, 3" albino Channel Cat, and 2 "Valentine" synodontis-hybrids (2" and 3") in a different 55g.
Also have an empty 75g and another 75g (maybe a 90g) on the way
