How do you take care of tetra fry?

The best thing you can do to take care of tetra young is to feed them with liquid fry food, or you can take a cooked egg yolk, wrap a cloth around it, and swish it in the water (do not overdo this, it fouls the water). When they are large enough, move them onto powdered flake and brine shrimp nauplii. When the fry are larger than their parent's mouths (about 1/8 of an inch), move them into the main aquarium.