DeLgAdO;805854; said:i would have to disagree with that, you make it seem like they are A nocternal fish. but they must rely on sight to hunt, and cannot navigate in darkness like say a knifefish.
what would make more sense is that an arowana might move to mid-level to avoid being swiped out of the water by nocturnal predators at the surface.
and most diurnal fish eat at first sign dawn, i suspect your tiger barbs were swiped before you woke up.
No this was when my silver was in the 75 gallon tank which is kept in our walkin closet. That tank has no LED lights on it. With the tank lights off the only source of light in the tank would be from the heaters indacator light. The barbs were taken in total darkness.
