Whitebait is a collective term for the immature fry of fish, typically between 25 and 50 millimetres (0.98 and 1.97 in) long. Such young fish often travel together in schools along the coast, and move into estuaries and sometimes up rivers where they can be easily caught with fine meshed fishing nets. Whitebaiting is the activity of catching whitebait.
Whitebait are tender and edible, and can be regarded as a delicacy. The entire fish is eaten including head, fins, bones, and guts. Some species make better eating than others, and the particular species that are marketed as "whitebait" varies in different parts of the world.
As whitebait consists of immature fry of many important food species (such as herring, sprat, sardines, mackerel, bass and many others) it is not an ecologically viable foodstuff and in several countries strict controls on harvesting exist.
The Alboran Sea is the westernmost element of the Mediterranean Sea. Whitebait have been consumed as a favoured element of the diet of peoples living along the northern coasts of the Alboran Sea in Spain, even though sale of these products has been banned.
In Australia whitebait refers to the juvenile stage of several predominantly galaxias species during their return to freshwater from the marine phase of their lifecycle. Comments for New Zealand are generally applicable.
Species referred to as whitebait in Australia include Common galaxias G. maculatus, Climbing galaxias G. brevipinnis, Spotted galaxias G. truttaceus, Tasmanian whitebait Lovettia sealii, Tasmanian mudfish Neochanna cleaveri, and Tasmanian smelt Retropinna tasmanica.