Blue Jack Dempseys

[Tobigara]

i have a blue JD. it's so cute. also called electric blue JD. i've heard different things about them and was hoping someone could clear some questions up.

I've heard that they are both smaller than a strait jd and that they are smaller.

I've heard that they are less agressive than a strait jd and that they are the same.

Different sites say different things.

i'd appreciate anything i can get.

thanks in advance

 

[Leviathen64]

There is quite a bit to learn about these fish. Special needs like a UV sterilizer, have medication on hand, not as hardy as a normal JD, water changes, water changes and more water changes. Can not stress that enough. I've had bad luck with them. I am currently setting up a tank for this fish only. If you have checked the internet you should have come across Bluejax. Some great information . http/bluejax.co.uk/default.aspx They are a very beautiful fish and good luck.

 

[Tobigara]

actually, i never found that site. thank you!! mine seems to be doing pretty well. he is the only one that none of the other fish bully tho he is the smallest by quite a bit. he's healthy and active. i have never heard of a UV sterilizer. what is it?

 

[Leviathen64]

actually, i never found that site. thank you!! mine seems to be doing pretty well. he is the only one that none of the other fish bully tho he is the smallest by quite a bit. he's healthy and active. i have never heard of a UV sterilizer. what is it?

Well instead of getting in over my head I'll give you a link. As you read through the forums a lot of people recommend UV sterilizers. So here you go.

http/www.aquariumfish.net/information/uv_sterilization.htm

 

[Tobigara]

thanks!

 

[vancouver]

I'm not sure why you'd need a uv with an ebjd..

 

[Tobigara]

I'm not sure why you'd need a uv with an ebjd..

can you explain that please?

 

[vancouver]

I don't see why you'd need a uv sterilizer with an ebjd..

I don't know how I can explain it really.

EBJDs are known to be weaker then regular JDs.. but I don't see why a uv is needed.

 

[IzzyD]

I have owned my EBJD for five monthes now and he is doing great. I originally purchased 2 but after 2 days one of them passed away. They are slower growers, but the wait is well worth it because they sure are beautiful fish! "Mogli" is with two oscars, a regular jack dempsey, two fire eels, a bicher and a pleco.
They are more mild tempered, him and the eels are the least to be bothered, and Mogli never starts fights.

I have been researcheng as much as possible and this is some of what I have learned so far:

Most blues are males. The blue colouring is a recessive gene. To breed them you have to get a blue male and a female reg. jack (being that most blues are males). The first offspring will look regular, but carry the blue gene. most people breed a female from the first batch of offspring back to the blue male and the second batch of offspring will be blue.
If you have the time and and space, you can have two breeding pairs and then when your first batch of offspring come along you can pick out two nice females and switch them so they are not breeding back to their father, but another blue male.
This takes a lot of time, but there is no way to garuntee that a regular female jack carries the blue gene as it is not vivable with the offspring from a first batch.

Right now I am only five monthes into this project, but very excited to see the results. I will be sure to keep you informed as this process rolls along.

 

[rmcder]

The blue colouring is a recessive gene. To breed them you have to get a blue male and a female reg. jack (being that most blues are males). The first offspring will look regular, but carry the blue gene. most people breed a female from the first batch of offspring back to the blue male and the second batch of offspring will be blue.

Not all; 50% blue and 50% normal looking, but carrying the blue gene. You probably know that, but what you wrote could be misleading.