Is there a name for where fish lay their eggs?
Different names for different species. For most, the area where eggs are laid is called a "bed", or nest. For trout and salmon, it is called a "redd".
How fishes in group swim without crash?
Intelligence, coordination and slipperiness. Also, to rephrase your question correctly, "How do fish in schools swim without colliding with one another."
It is better the fish if you feed it normal goldfish or tropical flakes, I have never heard of feeding a guppie lettuse and lettuce is mostly water anyway.
A fish that is swimming vertical is usually ill or stressed and could die if not treated
They migrate to sea for four years to grow and become fretile.After four years they use smell to return to the exact same stream/river that they were born in.
What is the name of a fish which has flashing light above its head?
Does it look like this? http://ionceknewagirl.files.wordpress.com/2009/02/29_angler_fish.jpg if so then its an angler fish.
What does a life cycle of a sea monkey look like?
All life cycles are basically the same. Fertilisation of an ovum then celular growth and development through to adulthood/sexual maturity, procreation and then decline to death. Metamorphosis can take place at any, none or all stages of development depending upon species. Each of the stages can take shorter or longer time spans but all life follows the same cycle.
Is the word fish plural or singular?
What is the breathing method of mammals birds reptiles amphibians fish?
Mammals, birds, reptiles and adult amphibians breathe using lungs.
Fish breathe using gills, while juvenile amphibians breathe using gills and spiracles.
Are dolphins and groupers vertebrates?
Yes dolphins are vertebrates, because they are mammals and all mammals have backbones.(We humans have backones).
Do sharks die after the dorsal fin is cut off?
If they'd only cut the dorsal fin, there's a good chance that the shark would survive. But usually they cut all fins, which leave the shark unable to swim and dooms it to a slow death.
What dangers do salmon encounter on their journey to spawn?
Salmon encounter much hardships on their journey to spawn. A salmon has to swim the opposite way a stream is flowing, Salmon have to jump up mini waterfalls where hungry brown or black bears are waiting, other fish tend to eat the eggs or the fish that are about to spawn, they risk getting eaten by birds such as gannets and hawks and humans tend to prey on Salmon to eat.
What happens to fish that are exposed to pfiesteria?
Pfiesteria piscicida then feeds on the weak and exposed skin, blood, and tissue. The fish eventually die not by the invasion of Pfiesteria piscicida, but by suffocation (the toxins cause paralyzation of muscles) or by infection (bacteria and foreign objects can enter the fish through the lesions).
I do not know what you are talking about but it is unlikely that a dying or dead fish would leave eggs (ova). I would advise you to dispose of the fish and whatever you think are eggs in the garbage. Then clean out the tank thoroughly and do some study on how to keep fish properly before you get any more.