The male should guard them and keep the tetra away from the fry until there big enough not to get aten but they odd one might stray off and get eaten. If you really dont want to risk any getting eaten the 8 galaxy rasbora or ember tetra might be a better option.I just realized that if I have glowlight tetras in the tank and if I ever want to breed the ram/ apistos would the glowloghts eat the fry?