What kind of trout? Brown, rainbow, steelhead, brook, palamino? there are many different kind of trout with their own breeding habbits and habitat. As for how many in each birth, that would depend on how many eggs survive. In captivity or in the wild? In short, man helping trout by squeezing eggs from females and artificially fertalizing the eggs or do you want how they breed in the wild?
(google will give you 152,000 hits for hatchery breeding, wild breeding for various trout will yeild 276,890 hits)
As forthe wild fish, Brook trout, eggs take from eight to twenty-five days or longer to hatch and sometimes will not hatch if laid in fall until the next spring because of the water conditions. Rainbows take Eggs incubated from one to five months depending on trout subspecies and water temperature. This long incubation period subjects
the eggs to many hazards, such as disease, drought and flooding. Eggs that are not well-buried are quickly eaten by predators such as crayfish, insects, mud puppies and fish, including trout. She will lay up to 4,000 eggs at one time.
Trout are not live bearers, egg layers, all of them. Trout parents do not ingeneral care for their young after laying eggs. They are on their own. Trout can lay eggs in water up to 200 feet or better.
There is so much info without specifically identifying a species, captive breed or wild it is going to take forever to tell you who does what since they are different, and have different breeding habits in different parts of the US and the world.
Here are a few sites, however, a specific species is the best for the most accurate info.
www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12919479&dopt=Abstract
www.blackwell-synergy.com/doi/pdf/10.1046/j.1365-294X.2003.01917.x
eaglespark.com/breeding/index.html
2007-04-09 18:18:01
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answer #1
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answered by danielle Z 7
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I don't know if it includes breeding or not, but I thought this info on the Southern Appalachian Brook Trout might come in handy: http://wildsouth.org/southern-appalachian-brook-trout/. I am currently studying the breeding of a trout, too! Do you know if a female digs an egg hole with her tail? I apologize if this link wasn't helpful. I'll do some more research and see if I come up with anything. Please let me know if you find a pdf on trout spawning. I am blocked from almost anything but pdf and wikipedia. Here are the best answers I can give to your questions. Let me know what you think: 1) Gestation depends on what type of brook trout. 2) Brook Trout are definitely egg bearers. Guppies and Mollies, I believe, are live-bearers. Egg bearers lay eggs. We are live bearers. They just come to life as soon as they exit our bodies. 3) I don't know about other trout, but I think the Southern Appalachian Brook Trout produces about 100. 4) They leave them for fish food! The nerve! Not only that, but the bigger brook trout eat them! If you want, I'll send you an essay on the life of a Brook Trout. I hope this helps.
~A=A+SH
2015-03-29 18:02:18
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answer #2
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answered by Ashley 1
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Depends on how technical you want to get...
http://www.ars.usda.gov/Research/Research.htm
and put breeding trout in the search box. This will give you everything right down to the fish's' gene map.
Here's some info on how a trout farm in France operates that will probably answer your questions.
http://www.viviersdefrance.com/gb/elevage-t.cfm
But to quickly answer you questions, Gestation varies depending on species, up to one year 2) egg layers 3) several thousand 4) No parental care at all.
Hope that helps.
MM
2007-04-09 15:23:02
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answer #3
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answered by magicman116 7
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