Fish develop from eggs that contain a yolk. The yolk (like the yolk of a chicken egg) provides the fish embryo with all the food energy it needs to grow until it hatches.
All eggs have yolk. Fertilized eggs will have a little white circle on the yolk. Unfertilized eggs will have an oval instead of a circle on the yolk.
The least amount of yolk is typically found in quail eggs. These eggs are smaller in size compared to chicken eggs, and they usually have a higher egg white-to-yolk ratio. Additionally, certain types of very small or non-viable eggs, such as those from some species of fish or reptiles, may also contain minimal yolk.
There are three main types of chordate eggs: oligolecithal eggs (with minimal yolk), mesolecithal eggs (with moderate yolk), and telolecithal eggs (with abundant yolk). Each type of egg provides nutrients for the developing embryo in different ways and affects the development of the embryo.
The general term for a young fish is a fingerling.
Do you have an allergy to eggs, specifically to the egg white or yolk?
The chances of finding a double yolk egg in a carton of eggs are about 1 in every 1000 eggs.
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Eggs contain no to little amount of yolk as human eggs do. The small amount of yolk distributes itself throughout the egg.
Sea star eggs have more yolk compared to frog eggs. Sea star eggs are considered macrolecithal, meaning they contain a large amount of yolk which is necessary for the development of the embryos. Frog eggs, on the other hand, are typically microlecithal and contain less yolk.