In that case ill pick up some more girls soon.
On that topic, I know they sell both Black Phantom Tetra and Red Phantom Tetra. Will these school because their both phantom tetras or are they the same species but different branches of it?
If the do school and I find some red PT's would it be ok to get a couple female RPT's to go with my black phantom tetras?
Thanks for the help so far
These are two distinct species, the Black being
Hyphessobrycon megalopterus [?] and the Red
Hyphessobrycon sweglesi. When they were originally described by Eigenmann in 1915, he classified them as distinct species in the genus
Megalamphodus solely on the basis of dentition [teeth]. Weitzman & Palmer (1997) dissolved this genus and placed the two species in Hyphessobrycon, in the "Rosy" clade of some 30 closely-related species including the Rosy Tetra, Roberti Tetra, Bleeding Heart Tetra, Serpae Tetra, etc. These species all descended from the same common ancestor, which is why they form a "clade" scientifically. So in this sense, they are closely related, all 30 species. Some very recent ichthyological studies have proposed the revalidation of Megalopterus for the Black Phantom but not the Red. All of this shows that the fish are two distinct species.
Having said that, they probably will socialize in the same aquarium. I do not have the Red Phantom, but I have a group of the Black in with some Rosy, Roberti and Bleeding Heart Tetra, and the Black Phantoms certainly spend all their time together with these others, and in the shade of my sword plants; none of these fish like bright overhead lighting, so always have floating plants or some large-leaf plants to make them feel more secure. They will show their best colouration with dimmer light, and in larger groups. I do not know the size of your aquarium, but if you have space a group of 6-7 red phantoms would be fine in with the five black; I myself would get the additional female black as well.
Byron.