Spawning is the production or depositing of large quantities of eggs in water. This article is about the block cipher algorithm For the ultrafast laser pulse measurement technique see Frequency-resolved optical gating. In most Birds and Reptiles an egg ( Latin ovum) is the Zygote, resulting from Fertilization of the Ovum.
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Types of egg-layers
- egg scatterers
- nest builders
- egg hangers
- mouth breeders
- egg buriers
- egg enlargement
Spawn cycle
Egg
An egg sac or collection can be called a 'redd' as in 'salmon redd' for the eggs attached to the stream bottom. A stream bed is the channel bottom of a Stream or River or creek the physical confine of the normal water flow Specifically, a salmon redd is the space at the bottom of a stream that a spawning salmon makes for its eggs usually in a nest of rocks or scattered among the ground. Salmon eggs are typically a reddish, pink, or a yellow color.
Alevin
A newly-hatched fish in the larval stage, one which has not yet emerged from the nesting area. Fish are aquatic Vertebrate animals that are typically ectothermic (previously Cold-blooded) covered with scales, and equipped with two A larva ( Latin; plural larvae) is a juvenile form of Animal with indirect development, undergoing Metamorphosis (for example Alevins will have a noticeable yolk sac, and need this yolk sac while their digestive systems are developing. An egg yolk is the part of an egg which serves as the Food source for the developing Embryo inside Digestion is the breaking down of chemicals in the body into a form that can be absorbed At this stage, the fish are not prepared to hunt live prey, and are completely dependent on the yolk sacs.
Fry
A fry is a recently-hatched fish, one which has fully absorbed its yolk sac and can now hunt and consume live food. The fry of live-bearers do not have a yolk sac and therefore need to begin feeding immediately after birth. Live-bearing aquarium fish, often simply called livebearers, are Fish that retain the eggs inside the body and give birth to live free-swimming young
Parr
A parr is a juvenile fish, one preparing to leave the fresh waters of its home. Freshwater is a word that refers to bodies of water such as Ponds lakes rivers and streams containing low concentrations of dissolved Salts and other Total dissolved
Smolt
A smolt is a juvenile fish. This is the stage where Salmonid becomes physiologically adapted to saltwater and begins its trek to its salt water environment. Salmonidae is a family of Ray-finned fish, the only living family of the order Salmoniformes. Seawater is Water from a Sea or Ocean. On average seawater in the world's oceans has a Salinity of about 3
Grilse
A salmonid, especially an Atlantic salmon, which is returning to its spawning grounds after just one year in the sea.
See also
Many types of fish undertake migrations on a regular basis on time scales ranging from daily to annual and with distances ranging from a few meters to thousands of kilometers Reproduction is the Biological process by which new individual Organisms are produced A stream pool, in Hydrology, is a stretch of a River or creek in which the water depth is above average and the stream velocity is quite lowDapyx Software network: MP3 Explorer | Ebook Manager | Zenithic