Channallabes: From the Greek, channe, meaning anchovy and allabes, the name of a Nilotic fish (a kind of lamprey); in reference to the shape
of the fish.
Sexing
The genital papilla, which is to the right of the anus as you look at the fish with its head to the left, is elongated and pointed in males while it is round and relatively larger (and larger than the anus) in females. In ventral view especially, females are much broader in the body than males of equal age and rearing practices. It may be hard to see with the naked eye.
Size
Smallest 221mm, largest 327mm, average 274mm, most commonly 327mm. All SL.