Last October I acquired a small school of characin that the store called "red line tetra". These had been received direct from an exporter in Peru. I thought they might be Hyphessobrycon amapaensis, but after they coloured up in my aquarium this didn't seem likely. I did find one photo (after a very long search on the internet) from a German site that described this fish as an unnamed species of Hyphessobrycon from Peru. I'm wondering if anyone knows whether or not this fish has been described and named, and if so, what it is. A photo of part of the school is attached; the fish in question is the tetra with the orange-red lateral stripe.
While we're on the photo, I'd appreciate it if someone could confirm (or refute) my thinking that the larger darker fish to the right is Hyphessobrycon peruvianus. The smaller tetra in the centre of the photo is H. loretoensis as far as I know. I've come across some variable photos of H. peruvianus. Dr. Gery once commented that these two could be the same, or subspecies. I am hopeful that his review of the Hyphessobrycon species will be completed and published, unfortunately left unfinished when we lost this great scientist in 2007.
Thanking you,
Byron Hosking.
While we're on the photo, I'd appreciate it if someone could confirm (or refute) my thinking that the larger darker fish to the right is Hyphessobrycon peruvianus. The smaller tetra in the centre of the photo is H. loretoensis as far as I know. I've come across some variable photos of H. peruvianus. Dr. Gery once commented that these two could be the same, or subspecies. I am hopeful that his review of the Hyphessobrycon species will be completed and published, unfortunately left unfinished when we lost this great scientist in 2007.
Thanking you,
Byron Hosking.