After “Wikipedia”, and Froese & Pauly, 2001 ["The FishBase"]
<==o Stethaprioninae |--o Brachychalcinus [Ephippicharax; Poptella] | |-- B. copei (Steindachner, 1882) | |-- B. nummus Böhlke, 1958 | |-- B. orbicularis (Valenciennes, 1850) (Discus tetra; kiekkotetra) | |-- B. parnaibae Reis, 1989 | `-- B. retrospina Boulenger, 1892 |-- Orthospinus franciscensis (Eigenmann, 1914) |--o Poptella | |-- P. brevispina Reis, 1989 | |-- P. compressa (Günther, 1864) | |-- P. longipinnis (Popta, 1901) | `-- P. paraguayensis (Eigenmann, 1907) `--o Stethaprion |-- S. crenatum Eigenmann, 1916 `-- S. erythrops Cope, 1870
Reference(s):
- Anonymous: 2010: Characidae (visited: 2010-10-25)
–iNet: Wikipedia - the free encyclopedia: http://en.wikipedia.org/wiki/Characidae [last updated: 2010-06-10] - Froese, R. & Pauly, D. (eds), 2001: FishBase.
–iNet: www.fishbase.org - Nelson, J. S., 1994: Fishes of the world.
–John Wiley & Sons Inc., New York, 1994, xx-600