Top 10+ how do fish fertilize eggs

Sneaky fish darts past macho male to fertilize eggs When you’re not as big as the rest of the guys, sometimes you have to come up with different strategies to thrive. That seems to be what’s happened with a rare fish found in Cuatro Ciénegas, Mexico. While big males of the species horde the females, … Read more

In fish species that engage in external fertilization, males ordinarily take over the bulk of embryonic care once females have left their eggs behind. Females may simply take off and leave their eggs to a male to fertilize and then care for. External Fertilization Followed By Care From Dad In some bony fish species like … Read more

Researchers from the Karl-Franzens-Universität Graz in Austria may have discovered the explanation behind a seemingly counterintuitive act of cuckoldry that occurs in the animal kingdom, particularly among cichlid fish. Cuckoldry describes how some male cichlid fish mate with socially paired up females and end up fertilizing eggs in another male’s nest. This results in paternity … Read more

Add this one to the long list of things we don’t know about salmon and human impacts on them. Research in Washington State shows something in stormwater runoff from roads and highways is linked to pre-spawn mortality of coho spawners in rivers and streams nearby. This “pre-spawn mortality,” as it is called, could pose a … Read more

Talking about Fish reproduction in biology Males produce sperm, usually as a milky white substance called milt, in two (sometimes one) testes within the body cavity. In bony fishes a sperm duct leads from each testis to a urogenital opening behind the vent or anus. In sharks and rays and in cyclostomes the duct leads … Read more

43.2A: External and Internal Fertilization Page ID 14119 Compare and contrast external and internal methods of fertilization External Fertilization External fertilization usually occurs in aquatic environments where both eggs and sperm are released into the water. After the sperm reaches the egg, fertilization can then take place. Most external fertilization happens during the process of … Read more

Fish fertilize eggs in their male relatives’ nests Male cichlid fish sometimes fertilize eggs in nests belonging to one of their male relatives, a behaviour that is counter-intuitive yet ultimately beneficial, according to a study published in BMC Biology. Researchers at Karl-Franzens-Universität Graz, Austria, investigated the behaviour known as cuckoldry in cichlid fish, whereby ‘cuckolder’ … Read more

A team of researchers from the School of Life Sciences has discovered a stickleback fish that successfully delivered offspring from eggs that were fertilized while they were still inside of her. This represents the first-ever discovery of internal fertilization and the development of babies inside of a species that normally lays eggs. The experts collected … Read more

As I sit in my home along the shoreline of Lake Wallenpaupack, the winds are howling and there are white caps out in Martin’s Cove. Don’t ask me why, but I started to think about how long it takes for a fish to reach adulthood here in Lake Wallenpaupack. For starters, is it even possible … Read more

The production of marketable fish begins with the stocking of fry or juveniles into a rearing environment that assures optimum and rapid growth to allow harvest in the shortest possible time. The fish farmer has to obtain adequate number of young fish to meet his production goals. These fish can come from wild capture. However, … Read more