In one of the tanks we've exclusively fed mozzie larvae to the fry started when they're 2 weeks old. We noticed that half of the fry had difficulty with their swim bladder. It seems some of them have difficulty swimming to the bottom of the tank, as if their bladder is full of air....
It got us thinking, could it be that the mozzie larvae is full of skeletal bones rather than nutrient...Or perhaps they're just lazy cause mozzie larvae like to float on water surface, hence a lot easier for the fry to snap them without much of exercise.
Luckily, starving them for a day solves the problem, they started to scour the tank on every corner.
This is different compare to feeding adult bettas with "large" mozzie larvae though. Unlike small larvae, it seems large larvae is a lot more active and alert, hence has tendency to run off whenever something is getting closer to them. Very good exercise for any bettas :)
Monday 5 January 2009
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