Originally Posted by Calmwaters
In my 20 gallon planted tank I am thinking about putting 5-7 of each:
Red Minor Tetra
I have researched them and they all require the same water parimeters and like planted tanks with dark gravel which is what I have. I currently have 6 Neon and 6 Harlequin Rasboras in my 44 gallon and I really like them but I have never had Red Minor Tetras. If you guys see no reason why they would not work out do you think 7 of each would be ok or would that be to much? I of course would add them slowly to the tank not all at once.
I would avoid red minor tetras. While "common" names are misleading sometimes, since they can refer to several different fish, I suspect these are Hyphessobrycon eques, another common name for which is Serpae Tetra. Photo below for info.
These are notorious fin nippers. When kept in a large group of more than 9 or 10 they sometimes confne their nipping to themselves [notice the frayed fins in the photo]. But often they lash out at any other fish in the tank. Not good tankmates in anything less than a quite large aquarium. But I would never even consider them for my 115g.
If you like the red colour, there are several species of Hyphessobrycon that are ideally suited to community tanks with other characins and rasbora. Hyphessobrycon robertsi [Roberts Tetra; the scientific name is questionable as some ichthyologists thought this fish was a hybrid but Dr. Jacques Gery determined it is a valid species but to my knowledge it has not yet been officially named] is particularly beautiful, and there is Hyphessobrycon bentosi, H. bentosi rosaceus [Rosy Tetra], and the true Red Phantom, H. sweglesi [this one has a "black" cousin, the Black Phantom, H. megalopterus].