04-05-2010, 10:18 PM
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Originally Posted by Byron
Welcome to Tropical Fish Keeping.
This fish is the beautiful Congo Tetra, Phenacogrammus interruptus, one of about 400 species of characin that are native to West Central Africa. It occurs in the Lower Congo River, from whence it derives its common name.
I will be adding this species to our Fish Profiles, but in the interim it must be kept in a group--like most all characins it is a shoaling fish, and given its larger size (males attain 3.5 inches) it requires a spacious tank. I used to have a group of 5 in a planted 55g tank, quite a beautiful site indeed. The males have the greatly-elongated middle rays in the caudal fin, and a much longer dorsal fin that arches down onto the back. The iridescence reflected by the fish as it swims is strikingly beautiful.
There is a very similar African species, Alestopetersius caudalis , not quite as striking to my thinking, but it is the original one that you picture here.
Wow! Thanks Byron for replying and thanks for the added info!!! :D i truly appreciate the help