Rapps Genetically tested f1 Red Devils

[RD.]

Why does this not happen with most other species?

Because some of the amphilophus found within the crater lakes (as well as the great lakes) are such specialized feeders in the wild, in a way that directly affects the shape of their head/mouth/jaws. Read the link that I posted previously, all of this is very well documented.

Two different types of pharyngeal jaws have been described in A. citrinellus: papilliform and molariform. For both A. labiatus and A. zaliosus only papilliform pharyngeal jaws have been described previously in the literature (Meyer 1989, 1990a,b). All A. citrinellus individuals sampled in L. Managua, Tisma Pond and L. Masaya had papilliform pharyngeal jaws (see also Meyer 1990a). All A. citrinellus individuals collected in Ometepe in L. Nicaragua had molariform pharyngeal jaws. Among samples of A. citrinellus that were collected from L. Xiloá, L. Apoyo (A. zaliosus) and Isletas, L. Nicaragua both trophic morphs were found in sympatry. This study provides the first evidence of molariform pharyngeal jaws on fish from Lake Apoyo.

In A. Meyer's paper he states molariform morphs having blunter, shorter snouts, larger eyes, wider heads, and deeper shorter bodies than papilliform morphs.






Also, some of the cichlids found in the Rift Lakes, such as Placidochromis milomo, share this exact same trait. (hypertrophied lips) http://www.malawicichlids.com/mw08083.htm

Yet same as amphilophus, this trait will not be seen in captive bred specimens. It becomes a case of use it, or lose it!


FYI - I posted a link to that vid last year. There has been a ton of work already completed in this area, most of the links to that data have already been posted in the sticky that I previously linked to.

 

[Squirtle919]

I enjoy reading what you type up RD, sometimes its a bit much and requires multi reads but its always great!

 

[Miguel]

House has been cleaned from useless banter.

 

[aclockworkorange]

Wow.

Let me try again. All of this has been previously discussed in STICKY threads. Don't be lazy... If you are interested in a topic to the point where you are willing to post a thread on it, actually read through what has been posted (links included) at your own pace and then come back with questions. And do your own research too! These sorts of papers are usually easy to find and access.
If you have trouble understanding parts of it, ask for clarification from someone that does understand it. If you want the hobby to grow and want to gain real knowledge on some of these subjects, put some effort in. Especially if you're active on this site.


Sent from my iPhone using MonsterAquariaNetwork app

 

[Miguel]

I really do not see where you are coming from, Aclockwork.

If all has been said and done, what is the point of having a forum and being open to fish related discussions and doubts.

Why go the trouble of posting yourself? If the topic does not interest you, because you know it all, why bother? Why bother stating, urbi et orbi, that you are top tiered in what relates fish related knowledge?

 

[Aquanero]

I think this thread as gone full circle. The information the OP needs has been made available.