So here's the thing about taugeh ikan masin. It looks like a virtuous vegetable dish, beansprouts kan, how bad can it be? And to be fair, 200g of beansprouts genuinely is only 60 calories. The problem is that nobody stir fries taugeh with love and a dry wok. The oil is where 160 of those 290 calories come from, more than half the plate. Add 20g of ikan masin for another 40 calories and you have a side dish that costs more than most people expect. To be straight with you though, this is a ballpark estimate. Hard calorie data for Malaysian hawker cooking is thin, and how much oil lands in your plate varies a lot depending on who's behind the wok that day.
What actually changes the maths is the oil, full stop. A home cook being careful might use 10ml instead of 20ml and save 80 calories. A hawker stall that keeps the wok blazing hot and pours generously could easily hit 350 calories for the same plate. The salted fish quantity also matters. Some versions are barely there, some have a proper pile of ikan masin and more than double that 40 calorie figure. The tofu variant adds about 30 calories and bumps it to 320. For a side dish this is still pretty reasonable bah, especially compared to something like kangkung belacan which often has a similar oil situation. Just don't fool yourself into thinking beansprouts equals diet food automatically.