Convict cichlids (Amatitlania nigrofasciata) breed readily, but that does not make tank space, filtration or water quality optional. A breeding pair can attack companions and sometimes each other. Prepare adult housing and grow-out capacity before encouraging a brood.
Choose a compatible pair
Standard-form mature males are generally larger and may develop longer fins or a forehead prominence. Females often show orange-red belly coloration. Juveniles and ornamental forms can be harder to assess, and no single color cue guarantees sex in every fish.
A male and female are not automatically compatible. Buying several juveniles can allow pairs to form, but requires space and a plan for separating surplus fish. A calculated chance of obtaining both sexes is not a guarantee of a safe breeding pair.
Set up a proper breeding aquarium
Seriously Fish gives a 90 × 30 cm starting footprint for one pair. Choose more room where needed and do not use a ten-gallon container as routine permanent pair housing. Other fish are best omitted from a deliberate breeding setup.
Provide stable caves or a suitable flowerpot, soft substrate and separate retreats. Check entrances and edges for trapping or injury risks. Keep sightlines broken while leaving room for both fish to move away from one another.
Establish the biological filter before introduction. A gently running sponge filter or protected intake helps prevent fry losses. Merely transferring water from another aquarium does not establish filtration.
Maintain suitable conditions
The species reference lists 24–28°C, pH 6.0–8.0 and 5–25 dGH. Check your source water and the stock’s conditions, then maintain a stable suitable range. Ammonia and nitrite should be undetectable, with waste removed and water changes matched to the feeding load.
Feed an appropriate varied diet in measured portions. Do not keep increasing food and temperature to force a reluctant pair to spawn. Poor compatibility, immaturity or unsuitable conditions need investigation rather than stronger stimulation.
Eggs, wrigglers and free-swimming fry
The female usually lays eggs within the chosen shelter and tends them while the male defends surrounding space, though roles can overlap. Hatching commonly takes around three to four days. The young remain largely immobile while using their yolk reserve, and parents may carry them between shallow pits.
When the fry become free-swimming, offer appropriately sized foods such as newly hatched Artemia and suitable fine fry food. Check that they eat rather than relying entirely on algae and microscopic life. Feed small portions and remove excess food without siphoning up the young.
Parents may lose or eat a brood, become incompatible or prepare for another spawn. Monitor their behavior and separate fish when necessary. Do not assume parental care will make every brood safe indefinitely.
Prepare grow-out space and homes
Growing fry need established filtration, suitable food and increasing space. Use replacement water matched for temperature and chemistry; old parent-tank water is not the only safe option or a substitute for a cycled grow-out system.
Confirm demand before raising large numbers. Convicts are prolific and many stores cannot accept them. Keep a manageable number rather than assuming healthy juveniles will automatically be bought. Review the maintenance routine as feeding and biomass increase.
Before I ask a question, I want to say thanks for the great advice! My husband and I were lucky enough to get 1 Male and Female convinct pair about a month ago. We have them set up in a 29 gal tank by themselves. They ate their entire first batch of fry and over half their second. What I was wanting to know is, the fry that is left, is still in the tank with the parents. They’re about a inch long and surprisingly strong swimmers. At what size should I move them to a different tank?
Hi Ivey, thanks for the kind words! I raised Convict Cichlids from fry for several years so I think I can help out. It is common for a new pair to eat their first few batches. It is great to hear that they’re getting the hang of it!
Removing the fry from the main tank is completely up to your personal preference. With some pairs, I left the fry in for up to a year, while others I removed right away. If you have a grow out tank, I’d recommend moving them. Too many Convicts in one tank can cause aggression between fish. 29 gal should be enough to house them for a bit longer though.
Hey!
This guide has been very helpful!
We have some baby cichlids that are about 2 months old now. It seems that some of the babies might be slowly pecking their dad to death. Is this a sign of something more serious? Do the children sense weakness in their parents? The baby cichlids are not in want of sustenance, food is provided at necessary intervals. The father is now in quarantine, in a separate tank. I just didn’t know if this was normal behavior or not.
Thanks!
S
Hello! I have a 5 gallon tank and have different kinds of fishes on it and also have a pair of polar parrot cichlid. Amazingly my pair of parrot cichlid have fry. Now i would like to ask if i should separate the other fishes?
Because i think that maybe they will eat the fry or the parents will do it. Because i would really love them to grow. Thank you!
How can u tell if they are paired as mine jus chase each other and the males hide… Why is this???
Should I seperate my new baby cichlids from the main tank
Just wondering if I can remove the egg from the parents before the hatch? And what would the outcome be ?
If the 2 convict Cichlids successfully breed and the mother becomes damaged or
“sick” ………..what could be the reason?