A large proportion of the fish captured in this stream is nearly the same as what is found in the Lower Nile and in Egypt; but some sorts are found which are peculiar; amongst which the fish-salamander (_Lepidosiren_) and some Siluridæ may be mentioned as representatives of the tropics in Africa. There is one kind of these called Kilnoky by the Bongo, and which is rather interesting. It reminds one of the species of the Auchenipterus or Synodontis, which are distinguished by their forked tail-fins. Another of the most frequent fish is that known as the “Besher” of the Nile, here called “Gurr” by the natives.[24] The elegant, large-scaled _Heterotis niloticus_, which the Bongo style the “Goggoh,” has a tender flesh and is of a good flavour. The river does not generally abound with fish which are desirable for food, but those which can be eaten generally belong to the section of the Characini; for example, the _Hydrocyon Forskalii_, which is here called “Kyalo.” This is a grey-streaked fish, glittering like pearl, in shape not unlike a salmon; it has red fins and a regular dog’s head, of which the lanky jaws, armed with conical teeth, amply justify the systematic name. Related to this is the “Raha” (_Ichtyborus microlepis_), which is noteworthy for its pike’s head, and the small-scaled _Distichodus rostratus_, or “Heeloo,” as it is termed. There is another sort which the Bongo call “Tonga.” Besides these there are the “Kalo” (_Alestis_) and the “Dologoh” (_Citharinus_). Of the perch, which plays so prominent a part in these waters, the silver-grey _Lates niloticus_, known as “Golo,” is very abundant, and perhaps still more so the “Warr” (_Chromis_), about the length of a finger, and of which there are several descriptions. The “Warr,” when first caught, is of a dark-green tint crossed obliquely by a number of broad dark stripes. The most common, however, of all the fish, and which seems never to fail in any of the marshes left by the retreating floods, are the sheath-fish, which belong to the Clarias species, the white flesh of which has a detestable flavour of the swamps; and the “Geegongoh,” which while they are alive are so like in colour to the brown slime in which they roll that they cannot be distinguished from it. A rare sort of the smaller fish is that known as the “Banghey,” and which belongs to the species of the Schilbe. Interesting, as being a representative in Africa of an Indian species, is the speckled grey and brown _Ophiocephalus obscurus_. It only remains to mention among the lesser sorts “Ndeer” (_Ctenopoma Petherickii_), the “Labyrinthi” of the Marango (_Labeo Forskalii_), and the “Möll” (_Mormyrus cyprinoides_). [Illustration: Young Polypterus.]