We received two new Corydoras from Peru, both from the same collection site, classified as Variants 1 and 2. For information on Variant 1, see https://www.aquariumglaser.de/en/fisharchive/corydoras-sp-llanos-oran-var-1-2/. All details regarding their origin can also be found there. Variant1 has received the number CW226 in the meantime.
The second variant has more dark areas on the flanks. As already mentioned for Var. 1, both forms belong to the species group Corydoras fowleri-coriatae-semiaquilus. All of these species originate from Peru and neighboring regions and differ exclusively in their coloration. In C. fowleri, a broad, diagonal band runs from the base of the dorsal fin to the lower base of the caudal fin. Above the eye is a dark, vertical band that extends into the eye. Between this eye band and the base of the dorsal fin, the back of C. fowleri is light in color. In C. coriatae, the pattern is very similar, except that the dorsal band forks below the dorsal fin in the middle of the body, forming another band that runs forward toward the gill cover. Finally, in typical C. semiaquilus, the flank band has become a solid black wedge. Additionally, in C. semiaquilus, another dark stripe runs between the base of the dorsal fin and the eye band.
Apparently, however, these three basic types are highly variable, and each stream seems to have its own predominant color form. Nevertheless, all of these variants can usually be classified into one of the three scientifically described species based on the criteria mentioned above. This is not the case with C. sp. “Llanos-Oran”/CW226. With these Corydoras, it appears as though the goal was to combine as many characteristics as possible from the various species of the Corydoras fowleri group into a single fish. The otherwise reliable identifying feature—the dark band between the eye and the dorsal stripe—is, for example, unreliable here. Some specimens have it, while others do not.
Maximum size: approx. 7.5 cm; Temperature: 22–25°C; pH and hardness: not important for maintenance (tap water), soft and acidic for breeding; Diet: omnivorous; Social behavior: peaceful schooling fish.
For our customers: These fish are listed under code 229695 on our stock list. Please note that we supply exclusively to wholesale customers.
Text & photos: Frank Schäfer
