Wow, fantastic footage! I have been to that same spot many times (Kirby's Rock, about 26m, right?) and shot many stills of pygmys at that fan, but have to say that I can see the little bugger far better in your video that I can in person. Well done.
I too would like to know why it doesn't keep its back turned when the light is on. I have to turn off my focus light to get them to look my way
I'll offer a contrarian approach - bearing in mind that I am not a doctor and don't play one on TV - but I don't use malaria profilaxis anymore and instead rely on repellent, clothing at dawn and dusk, and common sense. I don't suggest that this advice is necessarily applicable to anyone else. It is up to everyone to weigh up their risks under competent medical advice.
Having tried several regimes, all had severely undesirable side effects for me, and with a career focused in the tropics I could not continue taking anti-malarials indefinitely. I have not been infected in over 25 years of 6-8 trips a year to PNG, Timor Leste, Solomon Islands, and Vanuatu plus living in Manila where dengue is endemic. Granted I am not sleeping in villages and tramping through the bush (but neither do most divers) but I do spend a fair bit of time outdoors in rural areas on construction sites. The only time I contracted malaria was while living in the Solomons for a couple of years while on profilaxis! I can vouch that it is not something that I would want to repeat but at least it was P. vivax and not P. falciparum, and thus easily cured.