Symphysodon tarzoo
Symphysodon tarzoo is one of currently three species in the genus of cichlid discus cichlids from the Amazon basin in tropical South America. The species was in 1959 in a specialist aquarium magazine imported from the basis of an Leticia (Colombia ) blue Symphysodon instance described by E. Lyons as a subspecies of Symphysodon discus, the description in 1960 but rejected by LP Schulz in another aquarium trade magazine. 2006 was the Swedish ichthyologist Sven O. Kullander, together with two colleagues, however, that living in the western Amazon discus fish, both in their mitochondrial DNA as well as in coloration, aequifasciatus clearly distinguished from those occurring in the central and eastern Amazon region Symphysodon and ordered these discus fish the taxon Symphysodon tarzoo to.
Features
Symphysodon tarzoo is in contrast to the predominantly brown colored Symphysodon aequifasciatus rather bluish to greenish and is distinguished by a distinct pattern with red spots on the body sides and on the anal fin of the other discus fish. When subsequently deposited neotype of the species, the type specimen is apparently not obtained, it is a mature male of 13.2 cm length with 14 Abdomenwirbel and 17 caudal vertebrae and following meristic determination criteria:
- Fins formula: Dorsal X/30; Anal XIII/31
- Dandruff formula: MLR 58; SL 20/14
As with all discus fish but is also at Symphysodon tarzoo be assumed that there is a more or less large variability here.
Lyons describes the fish as [ ... ] predominantly teal blue on the body, they have deep red ventral fins, a red fringe in the dorsal fin, a large anal fin, which is covered with bright red spotting [ ... ], and this fin is also red margins. He also quotes an ornamental fish importer, which seems to be wider, the head of this blue discus, and he has a kind of Bulldog face.
Dissemination
Symphysodon tarzoo comes in the Amazon region to the west front of the area between Manaus and the Rio Purus Bauana anticline ( " Purus arch" ). Only a few copies of Symphysodon tarzoo be found further downstream. Symphysodon aequifasciatus missing further upstream complete. Changes on the action as phylogeographic barrier Purus anticline the flow, slope and sediment is deposited. Symphysodon tarzoo but were also caught in the Rio Madeira, the downstream flows further into the Amazon.