Roloffia huwaldi Berkenkamp, H. O. and V. Etzel 1980

Description provisoire de Roloffia huwaldi spec. nov.

Killi-contact: Périodique bimestriel / Association Killiphile Francophone de Belgique v. 8 (no. 5): 1-19.

6·6 cm SL (Scheel ROTOW2)

Populations

• Largo
• Ngabu

Largo - Collected by Busch in 1989 (SL 89 code).

Ngabu - Possibly collected by Berkenkamp in 1980.

Moyamba District near Ngabu, about 20 kilometers from Moyamba, southern central Sierra Leone.

Thought by some to represent occidentalis or a relict form of this species.
In 1981 (AKFB) Berkenkamp & Etzel carried out crossings & electrophoresis of muscle tissue. They found huwaldi to be closer to occidentalis than toddi. They reported crossings between huwaldi & occidentalis to be sterile at F2 level. No further research was carried out cytologically to find out the reason.

Roger Gladwell kept this sp. for a time & found them very aggressive. He spawned them on silver sand & bottom mops. Incubation time was 3-4 months. Two colour forms were maintained being red & blue, the blue were found to be more aggressive.
Fry reared in the normal way with brine shrimp grew fast and resuted in large adults.

These are mean, nasty SOB's & should be kept on there own.