Fry (biology)

Fry (biology)

Fry is a term used in ichthyology, the study of fish, to refer to a stage in the development of many species of fish. This stage follows the larval stage and continues until the fish reaches juvenile status.

Definition

The term "fry" is most commonly used to describe fish that have recently emerged from their eggs and have yet to reach full size. During this stage, the fish are typically very small and vulnerable to predators. They are often still developing key physical features, such as scales and fins, and are not yet capable of surviving on their own without the protection of their parents or a safe environment like a fish hatchery.

Development

The development of fry varies greatly between different species of fish. Some species, such as salmon, are born in freshwater environments and must undergo a process of smoltification before they can survive in saltwater. Other species, like many types of shark, give birth to live young that are already fully formed and capable of surviving on their own.

Diet

Fry typically feed on a diet of plankton and other microscopic organisms. As they grow and develop, they gradually begin to eat larger food items, such as insects and smaller fish. This transition is a critical period in the life of a fry, as it must learn to hunt and feed on its own in order to survive.

Habitat

Fry are found in a wide range of habitats, from freshwater rivers and lakes to the open ocean. The specific habitat of a fry often depends on the species of fish and the stage of development. For example, salmon fry are typically found in freshwater environments, while shark fry may be found in both freshwater and saltwater environments.

See also

• Fish development
• Fish reproduction
• Fish hatchery
• Ichthyology