What is a fish egg?

A fish egg, also known as a roe, is a small, round object produced by female fish. It contains a developing fish embryo surrounded by a protective membrane and a yolk sac. The egg provides nutrients for the embryo until it hatches and becomes a free-swimming fish.

Fish eggs are typically released into the water by the female fish during spawning season. The eggs may be fertilized externally by the sperm of a male fish, or they may be fertilized internally before being released. The eggs then sink to the bottom of the water or attach to plants or rocks, where they develop over a period of several days or weeks.

Some fish species, such as salmon and trout, migrate long distances to their spawning grounds in order to lay their eggs. Other species, such as goldfish and guppies, may lay their eggs in their home aquarium.

Fish eggs are an important food source for many aquatic animals, including fish, birds, and mammals. They are also used in human cuisine, and are considered a delicacy in many cultures. Some common types of fish eggs used for food include caviar (sturgeon eggs), ikura (salmon eggs), and tobiko (flying fish eggs).