Hey,
all catfishes and mastacembelidae on Sue's page were identified by me in most cases after posting photos here and shorter or longer discussion, which in not obvious species usually ended like "probably this" or "maybe that" - that's the way discussion about not common tanganyikan synos usually ends.' So catfishes on Sue's page shouldn't be threated like 100% right ids. There are a lot of undescribed species in a lake and probably they are still during the creation phase in Lake Tanganyika - we won't be always able to say what is what and we just have to live with that
. In last few years I've met few persons that regulary visit lake Tanganyika and they always says that there is much more species than a hobbyst may be aware of. Good rule is to avoid hybridisation in aquarium, so keep familiary looking species in different tanks.
Also in cichlids cases exporters are interested in some varieties of particular species because they sell the best - for example N. leleupi - there is a lot of spotted specimens in a lake but we see only yellows - they sell much better than dull colored, spotted fish. In catfishes exporters do not know much more than that syno granulosus is expensive and multipunctata will sell for sure so we may see more different varieties than in cichlids.
Anyway you have nice synos - enjoy them
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Have you seen this movie about breeding S. polli?
http://www.youtube.com/watch?v=g9Eq-mL-hIE
it will give you an idea how they may spawn.
