Chad

The worm-jawed mormyrid, Campylomormyrus tamandua, is a benthic mormyrid recorded from nine countries in West and Central Africa. It sometimes arrives among imports of the elephant fish, Gnathonemus petersii, but has both jaws extended into a beak-like shape. It needs pristine soft, acidic water, generally refuses standard foods and grows to 400 mm SL. Like other mormyrids it produces a weak electric field, used to navigate and to communicate.

The widehead catfish, Clarotes laticeps, is a large predatory catfish recorded across much of Africa, from Senegal and Guinea east to Egypt and Kenya. It inhabits large lakes and rivers and grows to 80 cm, though it is unlikely to reach this in captivity. Uncommon in the trade, it is capable of swallowing surprisingly large prey and is unsuitable for all but the biggest aquaria.

The Bouala lyretail, Aphyosemion bualanum, is a killifish from the upper Benue and Mayo Kébbi systems in Cameroon, Central African Republic and Chad. It is listed as endangered by the IUCN. Before 1990 the name was misused for various populations of A. elberti.