is the mythical black Jack Dempsey real???

  • We are currently upgrading MFK. thanks! -neo

is the black dempsey a new type?


  • Total voters
    238
cichlidinsomniac;2994430; said:
my female dempsey was largest and most dominant fish in the tank in september of 2007 and she was always dark, now that she's the smallest and at the bottom of the pecking order she is always very light. There is no "black dempsey" and its certainly not mythical


So, in this thread, you are telling us that you KNOW that an EBJD is a recessive gene that comes from a pure JD, but there is no possibility of a black gene?:confused:
 
frnchjeep;2994459; said:
So, in this thread, you are telling us that you KNOW that an EBJD is a recessive gene that comes from a pure JD, but there is no possibility of a black gene?:confused:
kind of hard to have a black jd when normal jds are can change from black to light brown
 
The term hypermelaninistic is a pretty general/vague term. It simply means there is a flood of color. Xanthophores are technically hypermelaninistic... as they have excessive yellow. Erythrophores are also hypermelaninistic... as they have excessive red/orange... and Melanophores are hypermelaninistic as they have excessive black...

Albinism and Leucism are hypomelaninistic, as they relate to a "lcak of" menanin as opposed to an "excess of"...

So yes, any "more colorful than average" animal is hypermelaninistic... but being more colorful than average does not indicate a color mutation or "morph"...
Thank you very much for the point though Mark... it was good enough I had to go off and further educate myself to respond :P

In the end... since there is no true definition of "a new type" (as the poll question here is worded)... no agreed upon definition of "color morph" in any of these threads... nor more data that random comments highlighted with some slightly educated opinions... This debate is for the most part just an opportunity to toot our own horns and criticize those whose opinions differ from our own.

Personally I would qualify a "morph" as a color trait (or other characteristic) that breeds true... so until someone shows up with a "Black Dempsey" x "Black Dempsey" pair that produce 100% "Black Dempsey" fry... I'm going to keep telling you that you simply have a pretty regular old Jack Dempsey...
 
frnchjeep;2993542; said:
No, blue dempseys are in fact a new(ish) breed...AKA EBJD or electric blue jack dempsey. However, they aren't really JD's but a hybrid with the name EBJD.

And, Tongue33, The pic is crap because my camera is crap. The tank has almost 400 watts of light on it and the pics still come out dark.:screwy: I swear, my cell takes better pics. However, that jack was all black with bright blue/green spangels. Actually, he was a very pretty fish. When he died, I got another jack, but my new one is tan...It's just not the same...I miss the black one.

My condolences :( I was hoping to goad you into showing us another pic :(

Really was not intending to offend you :( I am a Crackerjack some times... ;)
 
Some jd's are just darker than others. Still just a good ol' regular jd.
 
I can't believe this thread is still going.

Bottom line-some JD's come in blue, brown, tan and....yes (drum roll please) even black.

There's is absolutely NOTHING mystical about it.
 
Some one selectivley breed some black jds and I'll buy all. I am obsessed with black jds and buy every one I see in lfs or wholesalers. I have quite a few normal looking jds that started black and only one that is actually black 99% of the time. I have seen a set of pics floating around the net with a solid black jd it had no color spots at all, like a moor gf. They may exists but it is not a breed as of yet. Breed them and they will sell.
 
I've been breeding JBJDs (Jet Black JD)for years.... They are most certainly a different species than all other color morph JD's. Here is one of mine. I'm taking orders for the next batch.

JBJD.jpg



Oh... and if anyone is wondering how I am so certain it's a different species, I used one of these:

dna.jpg
 
MonsterFishKeepers.com