At the moment Derek it's a mix of egg yolk powder, fine grade fish food and dried de-capsulated brine shrimp eggs.
They will, they are about the same size as Micro-worms (might be a bit smaller), and they live a long time in fresh water, main problem is that they swim much higher up in the water column, so they are good for Gourami fry etc., but not so good for Apistos, Cories etc.would vinegar eels work?