Which group is best known for forming surface bubble nests used to protect eggs?

Which group is best known for forming surface bubble nests used to protect eggs?

• A. Bubble-nest builders
• B. Egg-layers
• C. Egg-scatterers
• D. Livebearers

Answer: (A)

Bubble-nest builders create a surface nest at the waterline by producing a foam of bubbles often held together with saliva. The male then fertilizes the eggs laid by the female and places them into the nest, where he guards them until they hatch. This nest provides an oxygen-rich micro-environment at the surface and protects the eggs from sinking or being eaten, giving the developing embryos a stable place to develop. This behavior is typical of gouramis and bettas (anabantoids). In contrast, egg-layers, egg-scatterers, and livebearers describe broader or different reproductive strategies that do not involve constructing surface bubble nests.

Bubble-nest builders create a surface nest at the waterline by producing a foam of bubbles often held together with saliva. The male then fertilizes the eggs laid by the female and places them into the nest, where he guards them until they hatch. This nest provides an oxygen-rich micro-environment at the surface and protects the eggs from sinking or being eaten, giving the developing embryos a stable place to develop. This behavior is typical of gouramis and bettas (anabantoids). In contrast, egg-layers, egg-scatterers, and livebearers describe broader or different reproductive strategies that do not involve constructing surface bubble nests.