Tree frogs deposit their eggs several different ways. Many simply oviposit (lay eggs) on the water’s surface. Others have evolved interesting ways of breeding out of water to avoid aquatic predators. A large number of tree frogs drape their eggs on floating or emergent vegetation. In captivity, floating water lettuce, duckweed, or plant clippings can be placed in a rain chamber to serve this purpose. The familiar red-eyed tree frog, along with many others, takes it a step further, and lays its eggs on leaves that overhang a body of water. As the tadpoles hatch, they wriggle free from the egg mass and drop into the water below.
Some tree frogs breed by creating what are called foam nests, producing a sticky mucus to coat the eggs once they are laid. While this is being expelled, they use their hind limbs to lather it into a giant, foamy, protective coating for the tree frog eggs that ensures they remain moist while developing.
Certain canopy-dwelling tree frogs do not use bodies of water on the ground in which to breed. Instead, they rely on water-filled cavities within trees to deposit their eggs and raise their tadpoles. The tree holes offer protection from predators and prevent the tree frogs from having to climb down to the ground to breed. In captivity, it’s important to provide suitable conditions for the particular species you are breeding to deposit tree frogs eggs, whether it is an artificial tree hole, plants overhanging water, or a layer of floating vegetation.
If spawning is successful and tree frog’s eggs are fertile, they will visibly start to develop within days of being laid. The ovum of fertile eggs looks like it is splitting down the center, and it will soon start to take the form of a tadpole. Infertile eggs quickly mold and begin to decay, often being discolored. It’s fairly common for only part of a clutch to be fertile. In this situation, it may be necessary to use a moist paper towel or razor blade to carefully remove infertile eggs from those that are fertile and developing. This prevents the mold and unwanted bacteria that grow on the infertile eggs from spreading onto fertile ones.
Tree Frog Eggs should remain moist and be kept in a humid container to ensure that they do not dry out. If laid in a rain chamber, they can be left to develop and hatch into the water below. Tree Frog’s Eggs laid in the permanent cage should be removed and placed in a different enclosure. For species that deposit eggs around objects near the surface of the water, it is easiest to simply leave the eggs in the cage and then move the tadpoles once they hatch. tree frog Eggs that are laid on plant leaves should be moved before the tadpoles break free by removing the entire leaf. Suspend the egg-covered leaf above shallow water in a small container, such as a deli cup or jar. Limit or completely restrict the ventilation in this container to prevent desiccation of the tree frog eggs.