The male builds a floating bubble nest in which the eggs are laid.

Most of the eggs will float up into the bubble nest.

In 12 to 24 hours the fry will hatch, and continue developing within the protection of the bubble nest.

Too much turbulence is bad for bubble nests and plants alike.

Plants or rocks that break the surface often form a base for bubble nests.

They are lighter than water and consequently float up to the bubble nest.

The male builds a large bubble nest around a floating leaf or other object on the water surface.

Fish that build and guard bubble nests are known as aphrophils.

The male can be seen carrying eggs up to the bubble nest.

The male builds a bubble nest for the eggs, which he protects aggressively.