And now for something different in the world of
Tropheus-
Tropheus annectens. This species is often referred to as
Tropheus polli in the aquarium literature, but that is incorrect, as
T. polli (1977) is merely a junior synonym for
T. annectens (1900). That’s the polite, scientifically correct way of saying that referring to this species as
T. polli is wrong.
T. annectens is one of 9 currently recognized
Tropheus species, only 4 of which have been scientifically described. Unlike most
Tropheus species, which have dozens of phenotypically distinct populations,
T. annectens specimens collected from different locations in the lake appear quite similar; that is, this species is not highly polychromic. It is, however, sexually dichromic, which is unusual among
Tropheus species and populations. Females and sub-adults are brownish with striking white vertical bars; adult males are uniformly grey-brown with dark fins; both sexes have blue eyes and lunate tails.
T. annectens are also one of the largest
Tropheus species, at nearly 7”TL, and they are always found together with other
Tropheus species in the lake. Unusual and very pretty fishes IMO.