Animal Stories - Electric Blue Jack Dempsey

Animal-World Information about: Electric Blue Jack Dempsey

The Electric Blue Jack Dempsey is one of the bluest tropical fish, and it is definitely one of the most beautiful!
Latest Animal Stories
jo - 2014-02-21
I've had a blue electric for two and a half months, he was about one and a quarter inches when I got him, he is now close to three inches. He is in a 40 gal with a catfish. He does very well being alone. He is gorgeous.

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  • d.umlywufg - 2014-04-13
    I had an electric blue Dempsey 8 years ago, very aggressive, 12 inches long, lived two years.
Taylor - 2013-02-27
i have had a EBJD for around 5 months now and it is no more then 1 and a half inches in length, do that sound right to you or is it growing slow?

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  • Jeremy Roche - 2013-02-27
      Not a bad thing.  There are a lot of things that control growth.  Tank size, temps, feeding, but you are in no way doing anything wrong based on growth.
  • Taylor - 2013-02-28
    ok thank you for the info, at the moment i have it in a 125L tank with about 12 small community but will be moving it 2 my 240L tank with my 2 oscars when it is big enough. the temp is 25/26
  • Max miller - 2013-03-09
    I have 20 3 inch cory catfish with 1 electric blue jack deamsy she is 2 inches big they are In a 45 then I will move them all to a new them into a 80 will they all be ok in that tank
  • Jeremy Roche - 2013-03-10
    Should be fine.  They will enjoy the increased room!
  • Max miller - 2013-03-10
    So the eletric blue jack demsy will not eat the cory catfish and can  add 1 ram if so what kind? Finally this is the last question can I add my convicts with them they are the same size but the male? Thanks a lot :D :P
  • Max miller - 2013-03-10
    So the eletric blue jack demsy will not eat the cory catfish and can i add 1 ram if so what kind? Finaly this is the last qestion can i add my convicts with them they are the same size but the male? Thanks a lot :D :P
  • riz - 2013-06-05
    As a rule of thumb, fishes tend to increase in length 1 inch/month, depending upon how big aquarium is.
  • Jeff - 2013-11-12
    Although this fish is hardy they are also a very very slow grower and if they get into a bad spot when young and experience a lot of stress that slows them down 10 fold. I have 2 elec blues that were the same size as a red texas cichlid and an oscar and 2 africans about 1'. Within 3 months everything was twice as big as the blue dempsies. I am going on 7 months now and the red texas is near 6' and one blue is nearing 3' the other got bullied bad by the texas and is still under 2'. I now have a plexi sheet dividing my 2 blues from everything else.
tara - 2013-08-19
Hi I have a 40g with a edjd that I bought in April of This year. He/she is with two pictus catfish, rainbow shark, and a male and female brislenose Pleco. I was wondering what would make a good tankmate?

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  • Jasmine Brough Hinesley - 2013-08-20
    Try this Fish Finder application. You can enter in all your tank parameters, and it will give you suggestions on fish! It is pretty neat.
joey mathews - 2013-08-09
I have a 45 gallon tank with a 1 1/2 inch EBJD and I really wanted to add some more fish in the tank, preferably other cichlids. Any suggestions on what type to put in with him?

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  • Jasmine Brough Hinesley - 2013-08-22
    You might want to try this Fish Finder application. You can put in all the parameters of your individual tank, and it will make recommendations for what type of fish! It is pretty neat.

Edd miller - 2013-06-20
So i have right now a angelfish and cory catfish tank can i add a small electric blue jack Dempsey cichlid and the tank is 45

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  • Clarice Brough - 2013-06-21
    See the social behavior section up above for an idea of how these fish get along with others. I think your other fish will be at risk.
cichlid man - 2013-06-20
I was at petsmart last week and i was looking and i saw a jack demsy cichlid, the electric. So i have a 45 gallon with 1 angelfish and 3 cory catfish, Can i add a small electric blue jack demise cichlid.

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  • Clarice Brough - 2013-06-21
    I suggest you read the 'social behaviors' section up above.... then make your decision:)
john - 2013-04-01
ive a litter of ebjd(male) x bgjd(female) 2 weeks old,when will i see the difference in them(more yellow ebjb fry)they all look like normal jd fry at the minute.thanks john(england).

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  • Clarice Brough - 2013-04-17
    The electic blue babies will be whiter, especially if viewed from the top, with broken stripes, just on the top and bottom. The regular jack dempseys will be more gray and have full stripes on the bodies. Also the electric blues are smaller. That is what I understand (we are breeding these guys too... and that's what we were told to look for!) Good luck:)
  • Anonymous - 2013-05-02
    thanks clarice,ive bred many normal jack dempsey litters,bought 2 ebjd early last year one male is a good 6 inch long he paired with what i thought was normal jd female,shes very dark black in colour about 7inch long,had fry febuary,i also was looking for light(opauque)colouring.managed to separate about a month ago whiteish colour ones 8 of them,various sizes some no smaller than stripey i see the remaining young are nearly all turning whiteish,maybe 20 or more out of about 50,most are just as big as the darker ones and cant see any signs of them getting bullied or bothered so leaving them in the big tank all together.all have got blue specks but none more than the darker ones so far.all are eating well(bloodworm mainly)..thanks again for your reply and i'll update soon.cheers.
  • Clarice Brough - 2013-05-02
    Sounds really cool, and so glad they are all doing well. It will be interesting to see how they all turn out in the long run! Looking forward to your story:)
Md M R Nahid - 2013-04-04
I have got 1 inch in size of 7 Electric Blue Jack Dempsey and 3 jack dampsey on a 410 L tank, so far so good. I came to know that they fight among themselves when they grow older so how many more do I have to keep to make a large group? Please it will be a good help.

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  • Jasmine Brough Hinesley - 2013-04-04
    You have 7 Electric Blues and 3 Jack Dempseys? 10 fish should be a good amount. I would just keep an eye on them and see how they do.
Rose - 2012-06-23
hello i have a ebjd, i also have a regular jd. i believe these two are flirting and we all know where that leads to. So my question is can the two of them spawn even though they are diffrent.

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  • Jeremy Roche - 2012-06-23
    Yes they can.
  • chad - 2012-12-02
    Yes, in fact they becpome a stronger breed of ebjd which is actually encouraged to strengthen the fish and have less problems...
  • JOE VANN - 2013-03-16
    I bought a EBJD about 31 days ago,3/4in. he grow close to 5inches.What read comments slow growth not here,he growing fast.He grow up with commmunity fishes,I watching his mood,just maybe they will make it.5community fish everything ok for now.
Nanomedic - 2012-04-29
Hey everyone, New to the aquarien world. I have a 30g tank with one EBJD and a feather fin cat fish as long as two golden gromauis and one indian algae eater. I'm curious to know why my EBJD I have plenty of cover for him in rocks caves and plants he just hangs out in the Cave all day. But the other day I noticed the algae eater was trying to latch on to him and chases him around i bought theses algae waffers and it has seemed to help but my EBJD has been like this since i got him i do frequent water changes and everything seems to be working top notch yet no Activity from my EBJD. However when I introduced the two golden gromais. My ebjd was all over the place chasing them and such. Hopefully you guys have some suggestions because i really would appreciaite if tips or hints as to I would love to enjoy my EBJD. THANKS!@

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  • Jeremy Roche - 2012-04-30
    Sounds like he has made that cave his territory. Nothing wrong with that. The Dempsey will however be to aggressive to have gouramis in the tank.
  • nanomedic - 2012-05-06
    Awesome, thank you I have noticed a change in my EBJD over the past couple days he has been more active and is more freely swimming. He some times chases the goruamis around but for the most part just leaves them alone. But if I have anymore questions I will be sure to post thanks!