View Full Version : Central Americans Genus Realignment

Mog Carns
08-20-2015, 08:14 AM

Herotilapia multispinosa is, once again, the correct name.

08-20-2015, 11:17 AM
The original publication is located here for anyone who wants to wade through it -- the authors did a tremendous amount of work into it! http://www.mapress.com/zootaxa/2015/f/zt03999p234.pdf

There are a few details that I don't care for:
1.) the genetic analysis of the 52 fish is based on 5 segments of DNA but several of those fish only had 1 or 2 of those sequences represented (Table 1, example ‘Cichlasoma' atromaculatum)
2.) how finely the genera are being defined in the cladogram (Figure 1). Four of the eight newly proposed genera are monophyletic, which means they only have a single species in them! I can accept Chiapaheros and Kihnichthys because of how deep the cleft in the phylogentic tree is. I am not /quite/ convinced that Maskaheros gen. nov. versus Paraneetroplus; Oscura gen. nov. versus Rheoheros gen. nov; and Tomocichla versus Herotilapia are actually different genera, though.

Figures 2 through 20 do include photographs of representative fish, with some very good descriptions of the physical differences of the fish to justify the creation of those monophyletic genera. The dichotomous key that immediately follows it summarizes those differences based on physical features. In spite of that, I am still not quite convinced. I suppose one (questionable?) way to challenge this would be to see if fertile offspring could be produced from the closest related fish to those three that I mentioned above.