Hi all,
There are a large number of different plants in Lake Tanganyika, a lot of the endemic, and very few of them commercially available. The "
there aren't many/any plants in Lake Tanganyika" has come about because most of the commercially available cichlids come from rocky, or sandy, habitats where you could capture them fairly easily, and there aren't many plants.
It is such a huge lake it is more like a sea with cliffs and beaches, but away from these there are quieter areas where sediment accumulates and plant grow.
The long leaved plant definitely looks like a
Vallisneria sp. and so is presumably
V. spiralis aethiopica. The rosette plant, with a broader leaf looks like it is also from the family Hydrocharitaceae, according to <"
A checklist of Zambian vascular plants"> there are four
Ottelia species,
Ottelia cylindrica, O. exserta, O. ulvifolia & O. verdickii, but I can't find pictures of the submerged foliage of any of these.
Another families that look a possibility is the Alismataceae, that has
Ranalisma humile listed, along with
BURNATIA enneandra, CALDESIA reniformis, LIMNOPHYTON angolense, L. obtusifolium & WIESNERIA filifolia, but I'm not familiar with any of these genera.
cheers Darrel