It may be of interest to compare the food web
suggested by Witte et al. (1992) to the food-web
proposed some 60 years ago by Worthington (jig. 4-5).
One of the main differences is the disappearance
of the crocodile from Lake Victoria which was
a crocodile-infested lake according to Worthington
(1933). “Crocodiles act as an important link between
the larger water creatures and man, unless they take
it into their heads to reverse the topmost link”.
The disappearance of crocodiles, some decades ago,
certainly led to profound modifications in the lake
fish assemblages, that unfortunately are not adequately
documented. An interesting question would be to
know if the introduced Lutes would have been better
controlled in Lake Victoria if the crocodiles were not
extinct.