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!
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Anonymous - 2012-05-04
My jack is very peaceful and scared of my other fish and they are tiny compared to him

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  • Jeremy Roche - 2012-05-05
    If he was last in that could be the reason. As he gets comfortable he may lash out.
j - 2012-03-27
I had a 12 year old jack dempsey called 'the juggernaut'. He passed away Dec 2010. He ate everything we put in the tank, other cichlids, angel fish, hilaries, you name it he ate it. He would only come out to eat if I was feeding him. I miss him, best fish ever.

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  • Celeste Lehman - 2012-04-22
    I had a Jack Dempsey for at least 5 or 6 years when I lived in Minneapolis. Then I moved home and had him for 2 or 3 years more. Then I had a friend who was wondering if Jacky would like minnows and would eat them. So we put minnows in the tank. I guess I wasn't thinking and he got ick and other problems so sorry to Jacky. I put him at the end of my dads flower garden. He is still there. May he still rest in peace 2003. Thank god
sabrina - 2011-11-19
Has anyone ever heard of a bright red Jack Dempsey? I just got one and I have been unable to find information about about him/her.

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  • Brandon Smith - 2012-01-05
    Just a very neat JD variant :)
  • Anonymous - 2012-02-10
    Sounds like a female golden dempsey
Marjorie - 2011-04-05
I have a female jack dempsey and a male j.d. I have had them for over a year now. They have paired up but have not laid eggs yet. I feed them pellets and other frozen foods and worms sometimes. They are in a 55 gallon tank. I also put a mirror on the side of the tank but they have not spawned yet. What am I not doing right? I also put a slate in with them can you give me some advice? Thank you.

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  • Anonymous - 2011-06-23
    The jacks are really shy they need all the privcy they can get. You may need to cover the front of the tank.
  • Anonymous - 2012-01-22
    Turning up the heat a few degrees can help.
  • Joyce Johnson - 2012-02-03
    I have a pair of Jack dempseys is the second pair I have had, the first many years ago. Both have readily spawned and reared fry. Are you sure you have a male and a female? Second, I always supply cave areas for my J39;s so if they want to hide they can, and usually it is in the provided cave area where they spawn, bringing the fry out to deposit in one of numerous pits they have made. I keep the temp at 78 and ph at 7.0. Filtration is both biological and chemical (charcoal). It sounds as if feed is similar to you, except I add the algae wafers that they sell for plecos. Good luck! JDs are awesome parents and it is fascinating to watch them care for they young.
Robin - 2011-02-07
I recently lost two Tinfoil Barbs in my 55 gallon tank. Now I have my one Jack Dempsey. He's 5 years old and full grown. I would like to add a fish or two. What would be the best fish to add and hope they get along?

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  • Anonymous - 2011-06-23
    My oscar and 3 jacks do fine as long as you keep plenty of feeders.
  • jace - 2011-09-25
    I have 2 mating pairs of jack dempseys and 2 fluebonis I think they're called and a bunch of other fish and they all do fine I also had oscars too and they did excellent.
  • samiran roy,india - 2011-11-24
    Convict cichlids and oscars do fine with JD's
mike - 2011-08-09
I have a male and female blue gene jack dempsey there about a year or so old, I had got them from a friend who was going to flush them(or try to they are huge). I was wondering how do i get them to breed? Any help would do wonders. I also have a proven pair of red devils that I wanna figure out how to hatch there eggs myself.

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  • Charlie Roche - 2011-08-10
    I really don't understand the question. How would you attmept to hatch eggs? Found something that you will probably understand but I don't. It says " You can remove the eggs and use a slow airstone as a surrogate mother. The eggs need a slow flow of water near them for the best hatching rate. Most people consider it much more enjoyable (though less predictable) to watch the parents tend the eggs and herd the fry around". It can be done so look up things like artificial incubation fresh water fish, using surragate to hatch eggs etc. That should help.

    Also, breeding conditions??? Article on Animal World regarding breeding fresh water fish Link is I had circhlids and they would pair off and make all thse little caves using gravel, stones, plants whatever. Then they would just sit. I would then rearrage the tank cuz I thought they were bored. Well almost 35 years have gone by and I have been told that i was supposed to do that. I don't know but he breeds cichlids. Do they need to create a comfortable home? Mine did breed and then I had a whole mess of babies.
Anonymous - 2011-06-23
My 5 inch oscar and 3 jacks which are 2 inches and 2 are maybe 1inch an half do well. I had a red tail shark at one time but moved him to his own tank. The 3 jacks an oscar live well in a 55 tank for the moment as long as you keep plenty of feeders roseies on hand. Ron my oscar can get chassy. But I move things around when i see him acting out.

barb - 2011-04-14
I bought two jack dempsey's and they were the same size but its been about 3 months now. One of them has grown really big but the other one is still the same size that it was when I got them. Now the little one just hides all the time and when I go to feed them the bigger one won't let the other one eat as much. My question is are the they same and if so why wont the little one get any bigger? Yes, they looked just alike when I got them.

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  • barb - 2011-04-14
    I have a 20 gallon tank right now and the little one I call fluffy is just hiding all the time. Should I just get a bigger tank or take some of the stuff I put in there out? Like some of the rocks? If I do that then fluffy wont have any where to hide from keven. Thanks
  • Charlie Roche - 2011-04-14
    The article in Animal World states that you need a 50 gallon tank for one Jack Dempsey and you have two of these fish in a smaller tank. A 20 gallon tank is too small for even one of these fish. It would make no difference if you removed the rocks and decorations. The probability would be great that the larger (Keven) would harm the smaller (Fluffy).
  • Charlie Roche - 2011-04-14
    Let's start with the easy stuff. Click on the Jack Dempsey article attached and see if there is anything obvious. It sounds like you would need 100 gallon tank to maintain 2 of these fish. It sounds as if the more dominate fish is getting all the food. If the tank is not big enough to let two Dempsey's feed easily, that could be the problem.
stefan - 2011-04-04
I just bought a 2nd jack dempsey and I'm not sure they will both live in my cold water tank. The person at the petshop said they will. Wll they? Please anwser quick.

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  • Charlie Roche - 2011-04-04
    You need a large tank, at least 50 gallons. They can be agressive but if they both have their own space, you should be fine. Maybe you have a male and a female. Good luck.
Pappa J - 2009-09-25
I have two JD's a male and a female and the are only 2 inches in size but are definately my favorite fish the way the colors change and how aggressive they are. I used to have 3 tiger oscars and they could demolish 40 feeder fish in 10 minutes, 15 bux for that much entertainment.

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  • Krystina - 2010-03-02
    I also have 2 JD's, amazing fish with great personalities! both mine have aired up and are about 5 inches! I got them when they were each 2 inchs. I rescued the first who had jumped out of the tank in the middle of the night!
  • TJ - 2010-03-23
    I have an elec blue JD, but all the pics I see online look longer than mine. It's 6in long and is more round the the ones I've seen. Do you know why?

  • Jack Dempsey Dude - 2011-03-06
    Feeding large quantities of feeder fish to your Cichlids or any fish, is generally a bad thing to do. First of all, feeder fish (especially gold fish!) can carry disease. They are usually not very nutritious because of the conditions they are kept in.
    Also, feeding large quantities of feeder fish can be harmful to your fish because this can cause them to over eat. Over eating can lead to things like fatty liver disease and can really shorten the lives of your pets.

    I raise my own guppies for my my Jack Dempseys. This allows me to insure that my fish are being fed a clean, healthy food. Always remember to feed in moderation.