Animal Stories - Jack Dempsey Fish


Animal-World Information about: Jack Dempsey Fish

The Jack Dempsey Cichlid is one of the most interesting and beautiful of the American cichlids!
Latest Animal Stories
Alayna - 2014-07-31
I have a question, I have 2 jack Dempseys, one male and one female. They have spawned 3 times since I have owned them (5 years) they just had babies 2 weeks ago and I noticed the male is being very aggressive to the female, so much she has an open wound. I went to the pet store to get her medicine but what do I do? He has never done this to her.. I don't want anything to happen as I love them both. They're both very beautiful and I really need advise/help. Thanks

Click For Replies (1)
  • David Brough - 2014-08-02
    If the agression gets much worse I would separate them. Use a slime coat enhancer like Stress Coat or if the wound is severe, use an antibiotic treatment, something for fin rot or open sores.
Reply
darek l - 2006-02-05
i have been raising jack's for 10 years now. they seem to look their best with a black substrate as they adapt their color to the surroundings. i have a pair in a 55 gallon tank that spawns every 2-3 months for the past 4 years. i got jack dampdeys everywhere. my local shop took them in happily at first but 500-800 every 3 months got them sick really fast. the male is an out of the ordinary 10 inch with a 6 inch female. i feed them flakes, pellets, and shrimp. hes got quite a temper but as long as i got a few places that the mate will not fit into that will house the female all is good. i have green terrors, tiger oscars and pacus in my 7 tanks but the "JACK" and "JILL" are the most beautiful fish i own. be careful as they are aggresive and will eat anything that will fit in their month at least half way....

Click For Replies (2)
  • alicia - 2014-02-27
    Question please, I have a jack demsey and an orange one, I think it's a something bloodflower anyways they keep locking lips. Is this a mating or fighting thing? They haven't lost color.
  • Alayna - 2014-07-31
    I have a question, I have 2 jack Dempseys, one male and one female. They have spawned 3 times since I have owned them (5 years) they just had babies 2 weeks ago and I noticed the male is being very aggressive to the female, so much she has an open wound. I went to the pet store to get her medicine but what do I do? He has never done this to her.. I don't want anything to happen as I love them both. They're both very beautiful and I really need advise/help. Thanks
Reply
Jack Frye - 2014-05-25
I have an 11 inch jd in a 200 gallon tank with tiger Oscars and other jd s ........ They all get along.

Reply
Diane Lapson - 2014-05-24
We have a Jack Dempsey Electric Blue fish who is about 5 years old. He stopped eating over a month ago! And no matter what we do, he won't eat. He must be surviving on algae or some type of protozoa alone. We treated him for Ich and he appears to have 'hole in the head' but he is holding on and we really want to save his life. He has been 'ill' for a long time. We can't get any of our local petshops to take him and heal him. Apparently we don't know how to handle this one.



Does anyone in the New York City area want to take him and see what you can do? You can keep him. We want to make him well and save his life. He obviously has a strong life force because he is still alive after much stress from no eating, medication, etc.



Please respond if you can help. Thanks so much.

Reply
Nyan Tun - 2014-05-07
I have 1 jack dempsy in a 29 gallon tank. What kind of fish can I put together?

Reply
Johnny Jojnson - 2007-02-25
I really love Amphilophus (Cichlasoma) octofasciatum commonly know as the Jack Dempsey. My aquatic hobbyist activities usually focus on Angelfish breeding which can become tedious at times. Many years ago a friend gave me a few Jacks he had raised from fry in his tanks as a diversion from the frustrations of breeding Angelfish.

Wow, these fish are as rewarding and easy to breed fish as Guppies. They have fantastic coloration that changes with their mood. They are large enough to enjoy visually from a across the room or directly in front of the tank. I wish Angelfish had as much coloration. They do tend to lazily hide in the background or other hiding places such as caves but put on a heck of a show at feeding time.

It is important to provide caves if you want to breed them but they are not nearly as fussy about water quality as Angelfish. They do their own tank arranging. They tend to create depressions in the substrate all the way to the bottom of the tank and for this reason I suggest avoiding under gravel filtration. The only down side to keeping Jacks is they are not very live plant friendly and only get along well with a limited number of tank mates.

Click For Replies (1)
  • Pamela - 2013-06-02
    Angelfish is ugly. Buy a flowerhorn, it is the prettiest tropical fish as well as most valuable fish in market. Every one of them has a different pattern and males have a bigger hump, female flowerhorn has a samall or totally no hump. They are very active and fun fish to keep. You can feed it as much as it eats, this fish cannot be over fed. Flowerhorns are very hardy and aggressive fish that can only be kept alone, since you are thinking of buying one fish, i would suggest you to get flowerhorn.
Reply
Vicki - 2005-07-01
i had 2 jack dempsys, they were so beautiful. they will watch u walk by and just stare at u where ever u are in the room.
recenty they bred and i have hundreds of little babys. but i found jack(male) started to attack jill(female). it got to the stage where i had to put her into another tank, but sadly she died. jack is just over 8in and jill was just about 6in.

Click For Replies (1)
  • MsBobbins - 2013-04-18
    Hi Vicky. I would always have a tank ready to remove the male for about 2 weeks and try him then. I have seen my fish display this aggression. From From pesky spats to one male attacking very violently. I removed the female on that occassion for 2 weeks recovery and rest. I put a couple of babies in the tank which was the emergency ward.The male was crazy and almost killed my female. I know have learned this is because the male is only interested in making babies and the female isn't ready. It differs with different male fish some are a bit aggressive and accept her wishes and leave her alone for awhile. He will persist and try again later tho. Always have plenty of places she cane hide. Places he can't fit into. I now have a tank ready for this because the removal of the male when he displays this behavior has been the solution for my pair I mention above. My female was shocked the first batch of babies. I removed male with second batch for a few days. I have a lot of aficans. Most are not as aggressive however I do have plenty of hidings spots the male won't fit or dig into. Or knock over. Good lucFish are great! I'm about to try and match my JD and hope to have some little JD'S soon.
Reply
docpat - 2006-06-26
I purchased a two inch a pair of Jacks from the local pet shop. At first they got along well until one began growing significantly larger than the other. I was pretty sure they were a pair when I bought them. The larger one began his mating dance, shuddering and shaking around her, but she was playing hard to get. Finally he began chasing her to the point that one day she was just laying beaten and battered, fins missing on the top of the tank behind the heater. I took her out and nursed her back to health in a small two and a half gallon hospital tank for about a month. I then placed her tank directly in front of his thirty gallon. They saw each other and began following each other back and forth. I let this go on for two weeks. One day I put a piece of paper between the tanks blocking his view of her. He got very upset and was obvoiusly looking for her. After two days I put her in his tank and he began mating behavior again. By the third day he began chasing her around the tank, so I took her out and placed her in the small tank within his view again for a week. Then I reintroduced them. Five days later she laid several hundred eggs on top of and inside of a flower pot and the two of them now swim side by side when she's not fanning and guarding the eggs. I'm not sure when they will hatch, but it has been a real fun adventure to say the least. I have had FW, SW and reef tanks for forty years, but this is the first time I intentially manipulated breeding. Can't wait for the sequel.

Click For Replies (4)
  • Kathryn - 2011-04-06
    Got a question. When she was laying the eggs and prepairing to do so, did she turn a VERY dark color--almost black, while she was hiding in her area she chose for the laying? Ours is almost completely black. She has been in her hiding spot for about a week or so. Is this all normal?
  • 'Jackie Miller-McGraw - 2011-06-22
    Katheryn... mine is doing the same but has tried to kill the male now!!!!??? has yours been aggressive to your male?
  • Joyce - 2012-02-03
    My female turns black every time she lays eggs and stays that way until the fry are about 3 to 4 weeks old. They she returns to her normal coloring. I have read that is it due to stress.
  • terry todd - 2013-03-16
    I also bought mine at a pet store, not sure of their sex. One was larger then the other, both were the same color. The larger one has grown rapidly. The last 3 days the large one has turned black eyes & all. Does this mean it is a female & is going to lay eggs? It is real aggressive towards the other one.
Reply
Maree - 2005-05-15
I have had my Jack *female* for 9 yrs. she was my brothers for 2 yrs before that. I took her in cuz she was MEAN, lol. I just adore her. she meets me at the top of her tank and nibbles on my finger. gosh she eats everything; frogs, meat, and she loves ghost shrimp. I just love when I am at my desk, she sits in the corner and just looks at me till I move to play with her, lol. she is so active. she likes when I play with her with a long straw and she drags it in the water. anything and everything in her tank she pulls out. she doesnt like anything in there,... crazzeee fisheee. i just love her.

Reply
Bernie Mc1953 - 2012-12-09
I have four babies and two big jacks and the big dark bullies flight. One of the male's is a bit bigger, the other a little smaller. Should all six be in the same tank? Plus I put some feeders in so they can be eaten sometimes. I cut them up for the jacks. Am I doing the right thing?

Click For Replies (1)
  • Clarice Brough - 2012-12-09
    See the 'social behaviors' section up above. If all six are in a really good sized tank, they may be okay. But these fish will tend to pair up and then the pair will not tolerate any others in the same tank. They can also become very belligerent as they age.  Feeders have been known to carry disease, so be sure you quarantine them to make sure they are healthy before you feed them to your cichlids.
Reply