While most domestic strain male convicts don't get much larger than 4" anymore (with females smaller) due to massive inbreeding, a pair in a 20 gallon long is generally too small because there isn't any room for the female to avoid the male's aggression. I've done it, but it's not the best set-up in the world. As for the swords, even the larger wild swordtails are no match for a pair of convicts and any attempt by them to eat cichlid fry will result in the swords getting beat up and eventually killed. Large wild swords are too large for a 27 gallon tank, and wild swords are far too expensive to risk them getting killed by putting them in danger in a tank with a pair of convicts. That set-up will result in dead swordtails. A single female convict with a group of wild swords in at least a 40 breeder would probably work, especially if you don't mind never raising any swordtail fry.Those aren’t central americans. It’s 32 us gal and convicts need like 20 gallons. if you. Get big wild swordtails they will eat convict fry anyway swordtails get bigger and are more active than convicts, ive seen a female 6” swordtails and a male like 7.5” with the sword
Sprinkle Nice looking set up for the giant snail. Looking forward to this thread as it progresses!