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Cryptoheros nigrofasciatus (convict cichlids) Print E-mail
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Scientific Name: Cryptoheros nigrofasciatusCommon Name: Convict cichlid, zebra cichlid

Region: Central America (Guatemala, El Salvadore, Costa Rica & Panama)Size: Up to 6" (15cm). Females are smaller

Convict cichlidColor: White body, black vertical bars (hence the name convict). The stripes and any color on the belly become more pronounced during breeding. Males usually have darker stripes and pointier fins, are typically larger than the females, and fully mature males will have a bit of a hump on their head. Females have more color on their bellies, usually pink and green. There is also a pink albino strain.Water Chemistry: pH 6.0 - 8.0; medium hardnessTemperature: 68°- 80°F (20° to 27° C). Warmer water when breedingAggression: Aggressive, especially when mating. Compatibility: Aggressive, robust, larger fish (if you want them to live...)Diet: OmnivorousHow to breed: It would difficult to stop this fish from breeding. All you need is a pair, and they'll do the rest! It's a pleasure to watch these fish guard their fry.General Experience: Convicts were my introduction to the world of cichlid keeping. Needless to say, I was completely hooked. I was overjoyed when they started to breed, thinking I was going to make a million dollars by selling the babies. I was wrong of course, no one wanted them.

Anyhow, convicts are an excellent choice for a starter cichlid.  A pair of these in a well filtered 20 gallon aquarium, and you're good to go!

Even though I quickly graduated on to nicer fish, I would still have to say that cichlids hold a special place in my heart. This is partly due to the fact that while I was spending some time in Honduras, we stopped off at a local river on the way home from a game of futbol (soccer).  There was an old algae-covered dam that we were climbing up and sliding down like a water slide. As I  reached the top of the dam, I looked down the water's edge, and there about 12 inches below the surface was a wild pair of cichlids guarding their eggs on the wall of the dam. It was a pretty awesome experience!

Anyhow, feel free to leave your experiences in the comments!

Comments
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cichlids laid eggs, now they'
'Guest' (Unregistered) 2006-12-29 12:59:40

My female had laid her eggs several days ago, now they are all missing overnight. I don’t know if she moved them or not. She is acting very strangely, sucking up bubbles from the aerator and moving the bubbles. I don’t think the eggs were eaten by the other fish because she has been extremely protective of them. If the fry are hidden, they are hidden very well. Can you explain?
Aaron (Unregistered) 2007-11-12 08:48:40

The mother convicts have been know to bury their young if she feels that they are threatened. She's probably been sucking up the bubbles and releasing them on her eggs to aerate them. the fry should be out and about in a few days. If not, it might be safe to say, they were eaten.
'Guest' (Unregistered) 2006-12-29 13:00:03

Chris,
they've either hatched, and the fry are being hidden, or there's a possibility that they didn't fertilize properly and she ate them herself.
I have no idea about the air bubble though, maybe they taste good
missing eggs
'Guest' (Unregistered) 2007-01-01 10:02:55

i heard the males hide the eggs in their mouth and will eat them if they feel threatened.
hmm
Justin (Unregistered) 2007-01-01 10:50:21

I've never heard of a male convict cichlid hiding eggs in his mouth before!
missing eggs
jc (Unregistered) 2007-01-02 07:32:10

I agree. They've most likely been abandoned and eaten. Sorry
Brice (Unregistered) 2007-01-13 20:49:07

I have been doing undergraduate research on convict cichlid behaviors, i have read a book by Barlow stating that captive cichlids do not hold the eggs in their mouth bc they were not "trained" to do so. but in the wild it is very common in a stressful environment (lots of predators) for a male convict to hold the eggs in their mouth so he can move them out of immediate danger
cool
jc (Unregistered) 2007-01-14 09:56:27

Wow, I stand corrected! That is extremely cool! I wonder how these fish then learned to hold the eggs, seeing as most convict cichlids we get are aquarium bred and raised
Nathan (Unregistered) 2007-03-14 23:52:23

I also have a pair of convicts that laid eggs. The male seemed to be trying to get to the eggs since they arrived but the female has been fighting him off endlessly. now three days later she seemed to just give up and the male came in and did what looked like he was eating them and now they're gone. I'm new to the whole breeding thing and am confused since i've read they were so protective over their eggs and fry and am wondering why they would eat them...
eggs
Justin (Unregistered) 2007-03-15 12:22:28

There's a good chance that they were unfertilized
Anonymous (Unregistered) 2007-04-30 23:24:00

THE EGGS HATCHED THEN SHE WILL MOVE THEN TO A SAFER PLACE WHERE SHE WILL HIDE THE FRY UNTIL THEY ARE FREE SWIMMERS THEN THEY WILL BOTH PROTECT THEM..
New Question about babies
Ginger (Unregistered) 2007-06-23 20:20:06

I am fairly new to the cichlid hobby. Anyway, I have a breeding pair. They laid eggs and the eggs hatched. The babies are now about three weeks old. My question is this: is there a way to tell the sex of the babies yet? If so how? If not, at what age can you start to see the differences and what are they? Really need help here on this one! Anyone with info can feel free to email me after posting here. ginanimals@yahoo.com Thank you!!
sex
justin (Author) 2007-06-24 19:53:41

It generally takes much longer than 3 weeks to determine the sex of the fish. Once their fins and colors start to appear you'll know
breeding champ
prince (Unregistered) 2007-07-01 11:04:38

I have a breeding pair of convicts who generally produce 75-100 fry each time. this particular time, the male is very aggressive towards the female. the fry are free swimming (appx 2 weeks old), but the female hides most of the time. should i remove the male or female so not to stress her or should they be ok?
albino convicts eggs
Adam (Unregistered) 2007-07-02 04:33:10

my male and female convict are both
taking sifts at garding the eggs
but i dont no when there going to
hatch its alredy been four days. ive counted around about 400-450 eggs

please help me!
Adam (Unregistered) 2007-07-02 04:37:17

i would'nt i done that once and when
i put the male back with the female
he killed her so i had to remove the fry but they next day they died
male
justin (Author) 2007-07-02 08:19:50

I would try removing the male, the female can then look after the babies
justin
adam (Unregistered) 2007-07-05 04:51:40

the female will eat them and the
fry will die keep them together.
albino convict fry
adam (Unregistered) 2007-07-05 04:56:23

my convict fry hatched on monday
i seen them this morning in the
flower pot that they breed in
and theres hundreds but there
unable to swim could you tell me when there be free-swimming?
fry swimming
justin (Author) 2007-07-05 06:54:38

they'll be swimming within a couple days and you'll need to feed them
thanks
adam (Unregistered) 2007-07-05 12:18:14

thanks for the advice
fry
adam (Unregistered) 2007-07-09 06:58:53

i moved the mother/father out
because they started eating the fry
but the fry are swimming aroung in groups and are doing well but they
wont accept fry food but ive got alge
so i think there eating that but are they?
food
justin (Author) 2007-07-09 07:34:29

they may be. I never fed my cichlids fry food, I always just pulverized some flake food and shot it in near them
more
adam (Unregistered) 2007-07-12 08:48:38

can i have some info on the fry
cichlid fry
justin (Author) 2007-07-12 11:25:54

what info are you looking for?
well
adam (Unregistered) 2007-07-13 04:15:38

well when will they be able to go in with the others?and stages of growth
jay
adam (Unregistered) 2007-07-16 04:11:37

about 1-2 days
cichlid fry
justin (Author) 2007-07-16 07:39:17

when they're big enough to not be eaten!
Eggs..
Jay (Unregistered) 2007-07-15 16:16:34

My breeding pair of cichlids have laid eggs about 3days ago and havent hatched yet. So i need to know when they will hatch.
cichlid eggs
justin (Author) 2007-07-16 07:40:06

3 days is still a little early. Just be patient, watch them, you'll see when they're just about ready to hatch
Well then...
Jay (Unregistered) 2007-07-16 13:35:40

Thanks for the little tip.
Fry
Samuel (Unregistered) 2007-07-16 18:12:42

My convict fry have just hatched today, now how long will it take for them to get abount and inch big or to reach maturity?
convict fry
justin (Author) 2007-07-16 18:17:46

They should be that big within about 3 or 4 weeks, but that doesn't mean they're mature
Eggs
Jay (Unregistered) 2007-07-16 20:45:53

My convict laid their first eggs and its been about 5 days, and i have watched the female convict eat these eggs, i need to know why?
female convict
justin (Author) 2007-07-17 08:39:25

The eggs probably weren't fertilized properly - the male may not be mature enough yet. Don't worry, next time they should hatch
eggs
eddy (Unregistered) 2007-07-17 11:03:30

My cichlids eggs have just hatched, when will my breeding pair have their next batch of eggs?
eggs
justin (Author) 2007-07-17 11:10:53

possibly within a couple months if you feed them well and change some water
haha
adam (Unregistered) 2007-07-18 03:30:16

convicts are to vilent and crap
i coped there head of lol
convict fry
amy harrell (Unregistered) 2007-07-26 21:08:37

There is nothing more satisfying as seeing your first swarm. Every cichlid lvr should get to experience it at least one time! As for others in the tank eating the fry/eggs fat chance of getting past 1/2 the tank before papa skins someones butt alive! They are the most fearless parents I have ever seen, they would swim through haddes in a gasoline suit to protect the fry!
>
honkie_boi (Unregistered) 2007-07-28 01:31:08

omg.. ok well " .. >< i have a pair of convicts with like >< 10 other kinds of cichlids.. .. just today ..i saw my convict for sum reason .." ..>< guading this cave.. and like.." scaring other fish away ...>< " i looked from behind the tank and i saw Eggs." ..>< i decided to immediately remove the other fish .. but .. " i think .. the eggs " kinda blew ? LOL " now i see thew male trying to find it.. in the area.." ><

if some egg did like .. fly or under the sand" ( im using white sand as gravel ) .. will they hatch ? .. once they hatch ? will the convicts eat them?

plz reply here" or ..


email : contact_h0nkie@hotmail.com

thanx
eggs
justin (Unregistered) 2007-07-28 07:43:41

If they aren't laid on or attached to something, they may not hatch
Convicts breeding
Pete (Unregistered) 2007-08-03 13:14:15

oncoming home i seen that all the eggs had gone but the female was guarding a new area however i could see no fry. Then last night they all in a flowe pot in full view, its cook to watch them try wriggle out of pot until the female picks them up and takes them inside. I cant wait for them to hatch. the male is not doing much, since there is no other fish in tank he just stays close by pot until the female leaves and he take over until the female chases him out. The colours on the female are truly beutiful
wow
adam (Unregistered) 2007-08-07 14:07:32

my convict female has blue ram weird
the fry are a greyish orange colour
the female convict is pink i couldnt
beleave it
DUG A DEN......
Christina (Unregistered) 2007-09-18 12:38:20

This is just my opinopn, but you have way too many fish in a 55 gallon tank. Just think of yourself(being pregnant with triplets) your husband and another couple as living in a studio apartment with (depending on the size of your balas which like plenty of swimming area and can grow to about 16") 10 growing and active children, 5 dogs, two cats, a 7 foot husband and his mom (those would be the suckes), oh, and your nephew (clown)
DUG A DEN UNDER A LARGE LOG OR
LISA (Unregistered) 2007-08-13 00:38:14

MY FRIEND GAVE ME FOUR CONVICTS. THEY HAVE GROWN RAPIDLY. TWO PAIRED OFF AND MADE A DEN, WHICH IS HEAVILY GUARDED. ABOUT FOUR OR FIVE DAYS AGO THEY STARTED LETTING THE OTHER ONES STAY CLOSE BY. THEY ARE IN A 55 GAL. TANK WITH TWO 10 INCH BALA SHARKS, TWO FOUR-FIVE INCH RED FINNED SHARKS, ONE CLOWN, FIVE CORYS, ONE 12 SUCKER, AND ONE 7 INCH SUCKER, AND TWO GOURAMIS, ONE GUPPY.
Sweet ^^ Female convict laid e
honkie_boi (Unregistered) 2007-09-12 07:09:13

yeS ^^ she laid about 80 - 100 i think . shes garuging them ncely..

Counting the days till htach ,

saw the eggs laid on the 10th of september

any one know how long i have to wait till? already
2 days passed.
cichlid eggs
justin (Author) 2007-09-12 08:11:25

it should only be a couple more days then. You'll be able to tell, because the eggs will go from transparent to having something clearly visible in them
convict
adam (Unregistered) 2007-09-13 12:08:50

i have 13 albino convict fry and are 4 mounths old they about 1 inch or so long
could ya tell me when they will breed
or pair up an when will the females get there colour
Awww =(
honkie_boi (Unregistered) 2007-09-13 17:21:03

man .. i came back from after school. relized most of them were gone ><
either eaten or hidden..>< never theless i moved both of them into another tank

NOW =] my fries havebecome wigglers..

however only about 25 eggs survived.when do i start feeding them liquidfry ?
cichlid fry
justin (Author) 2007-09-14 09:52:54

right away! (just don't overdo it)
fry
captain (Unregistered) 2007-09-27 00:00:59

Hi,

My convicts now have fry they are about a week old and are getting bigger by the day! Its exciting to watch but I have 18 other fish in the tank. (55 gallons) Couple of sichlids, 2 oscars, guarmi, few barbs and a few neon medallions & 2 fresh water shrimp. Im wanting to know how long will the parents protect them? Im worried that in a little while they wont look after them anymore and if so they will be eaten immediately. Should I buy another smaller tank til theyr big enough to look after themselves? Thoughts?? Thanks
convict babaies
justin (Author) 2007-09-27 07:10:55

well, just how badly do you want to keep all the babies? If you leave them, some will survive. If you take them out, they could all survive, but what will you do with them?
Anonymous (Unregistered) 2007-09-29 17:10:54

Yeah I figured id let nature sort it out, survival of the fittest. Alas now theres only about a dozen left =o( They're getting bigger now, just over quarter of an inch. The transparency is just starting to fade and I can see very mild stripes coming through. Its fun to watch the parents protect their young, how long will this last though? I do think if they get abandoned theyll be eaten for sure. I heard the parents stay with them til theyre about an inch is this correct? Thanks again
convicts
justin (Author) 2007-10-01 08:39:36

yeah, that's about right
When does a convict become mat
Aurelio Arroyo (Unregistered) 2007-09-28 00:51:16

At what age do you know convict is full grown, does anyone know, if you do, please email me, Monkeyhead_74@yahoo.com
convict mature
Aurelio Arroyo (Unregistered) 2007-09-28 00:52:59

At what age are convicts abl to breed

MONKEYHEAD_74@YAHOO.COM
changing the fry tank water?
me (Unregistered) 2007-10-22 13:50:58

what is the safest way to clean the frys' tank out
aggressive
tess (Unregistered) 2007-10-22 20:30:34

My convict female at first chased the male away when she had her first spawn. The babies started to disapear and well i took the 7 babies away when they were ready enough. Also now she has had her second spawn and now the parents started off really close, but today things turned for the worst. I had to remove her from the nanies because he almost killed her. He attacked her as if she was another fish. don't know what to do. help
hi
adam (Unregistered) 2007-10-25 13:30:08

how many convicts can you fit
in a 40 litre tank?
You want Convicts to STAY in J
O Ricky (Unregistered) 2007-10-25 21:10:31

Depending on the size of your fish. My tank is a 125 gallon (almost 500 LITRES) and I have 13 Cichilds (commutnity) living in it. The average size is 3 inches. I like to give 10 gallons to an inch of fish for maximum health and space (it's an organic aqaurium) so do the math and my ecosystem is way over the Bio-budget. In 40LITRE, you can only have one cichild, or a pair if they're 2 inches or less or some more if they're tiny babies.
Queen of AMAZONIA
O Ricky (Unregistered) 2007-10-25 21:30:15

Anyone have a male Convict Cichild breed with a female Convict TWICE his size (no black widows here!) In my tank she always chases him away, she laid eggs that weren't fertized last summer and still she doesn't want him. My Cichild tank consists of 2 Convicts (2 inch, 4 inch), 4 Lemon/Labs (at 3 inch) and 7 Kenyi (at 3 inch). The female Convict is the biggest in the tank, she's the BOSS - the Queen of the Jungle. She's quite a carnivore and loves eating earwigs and can't get enough of them. Funny though how she chases away her own species more often than the other kinds of Cichlids; Convicts are American and I guess to win an American woman (fish) he's gotta put up with alot!
Anonymous (Unregistered) 2007-11-04 01:23:55

my convicts are crazy.. my female just laid about 100 - 150 eggs and she would protect it 24/7 without leaving the sight. The male doesnt do much but recently hes been helping her out alot. he was just tryin to dig holes around the castle where the female had laid her eggs . the male would suck the rocks up and bring it all the way to the other end of the tank lol he did that like 100 times lol i enjoying watching it it was insane lol. and yeah its pretty neat im just wating for the egg to hatch its been 3 days now almost 4!!
breeding convicts
steve (Unregistered) 2008-01-10 10:30:08

k i have a 55 gallon..got a bunch of convicts in it...1 pair have laid 2 sets of eggs..either one hatched..now another pair layed a bunch...waited the week or so..today thy were gone too..i change the water lots and feed them like its going outta style..they are very big and it feels like im missing something?3 nests and nothings hatched?!! anyone know why?
Single Mother Convict?
Jack (Unregistered) 2008-01-19 13:16:36

Ok so I named my male Black Convict Akon, and it has been 1-2 weeks. I have a Blue Paradise Gourami named Petri, a Bala Shark named Juju, a Clown Loach named Wampus, and finally I have the pair of Convicts, I have not named the female yet....

Anyways, about 1-2 weeks after the eggs were hatched, the male, Akon, left the mother, and he has also been trying to eat the eggs. What does this mean, and is it normal????
single mother convict
laura (Unregistered) 2008-01-22 15:47:16

the males will sometimes eat the eggs if they were not fertilized properly yes it is normal, they will probably pair up again
Rob (Unregistered) 2008-02-13 00:39:38

My frist chiclids were convicts easy to care for my problem with them they always bread,like out of control. dont think i will keep them again, just becouse of that. good starter fish!!!
hi plz help
adam (Unregistered) 2008-02-24 07:57:33

At what age are convicts able to breed
convict mother
brennan (Unregistered) 2008-03-04 16:13:11

i have a 150 gallon tank with three convicts, 3 jack dempseys, three firemouths, three green severums, two pictus cats, two 4 line cats, and a pleco. two of my convicts are females and one male. the smaller female and male had babies that are a little over a month old now and recently the mother has stopped protecting the babies. the dad is now keeping her away from them as well as all the other fish. my larger female convict is acting like she has laid eggs altho i cant see them due to the tank layout, but she is the only fish that the male convict lets near the babies and she lets him near her eggs. i was wondering 1st if a male convict will leave his former mate for a new one and if this is why the smaller mother of the babies does not protect them anymore, or is it that she is by far the smallest fish in the tank and feels she cannot protect them anymore? and also the bigger female doesnot seem to try and chase or eat thebabies from the smaller female. i was just looking for some explanatios on what is going on in my tank. thank you
Anonymous (Unregistered) 2008-04-13 14:47:31

HOW U TELL DIFERENCE BETWEEN MALES & FEMALE BLACK COVICTS
plz help
bob (Unregistered) 2008-04-17 00:04:40

My female convict laid her eggs 4 days ago and today when I looked I saw only 3 eggs left and I couldn’t see any fry and was wondering if she ate them or is just protecting them because she is still in her cave. In the tank there is a male (4 inch) a female (3inch) and a flying fox, just I wouldn’t think she would need to protect them from the flying fox but they both chase it around a fair bit. Thankyou for helping.
cyl_41@yahoo.ca (Registered) 2008-05-05 14:41:23

Do conics perfer certin kinds of plants to lay on.
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