i couldn't tell you how safe they are, depends on how well the males guards them i guess, but if left alone, i dare say the guppies and tetra's would have a go at themmy whip tails have just laid eggs in the tank....they are in there with 2 guppys (not fully grown) and 12 neon tetra's and 6 L333's (babys only 4cm's long) will they be safe in there to hatch and do everything eL-Natural?
tank is 3.5x2x2.5 so fairly large for the fish in there