Oppressive heat to add to misery in Harvey disaster areas early this week Weather News - September 02, 2017, 5:21:00 AM EDT Sweltering heat and humidity will add further strain to recovery efforts in Texas and Louisiana prior to the arrival of cooler air later this week.
The eggs have may challenges to overcome before being hatched. Even though she lays many eggs (1,000-2,000), not very many eggs will survive to hatch and emerge into the river. Some eggs are not fertilized and other eggs are damaged when she places the gravel over them. Sometimes another trout will pick the same location to spawn after she has, and destroys the redd.
If a species sticks around and looks after the eggs until they hatch, and even watches over the baby fish, usually less eggs are laid. For example, Cod lay up to 9 million eggs, but these are left to drift where they will, and so many don't survive even to hatch.Herrings, which lay around 50,000 eggs, also abandon them, but the eggs stick to the bottom and are less likely to be eaten by predators.hat is how this fish lays eggs.   Actually, it depends on the fish. Some fish, like salmon, lay only a few hundred eggs. But generally, marine fish lay more eggs. Some marine fish lay millions of eggs.