Bubble nest builders (also known as aphrophils) are fish that construct floating nests made of air bubbles bound together by their own mucus to protect and hatch their eggs.

Cichlids (pronounced sick-lids) are a massive, diverse family of freshwater fish (Cichlidae) famous for their striking colors, complex behaviors, and highly advanced parental care.

Unlike livebearers or bubble nest builders, cichlids are known for being incredibly intelligent, highly territorial, and deeply protective parents that use unique methods to raise their young.