How do deep sea viperfish reproduce?
343910
Probably externally, like lots of other fishes.  They male releases the sperm, and the female releases the egg.  The sperm drifts towards the egg, and then the egg is fertilized.
20204
"Members of most [shark] species bear live young, but a few of the smaller sharks lay eggs containing much yolk and enclosed in horny shells."  See link below for full encyclopedia entry.
353817
One of the most intense competition for mates in the cetaceans occurs in the right whales (Eubalaena glacialis and E. australis).\n\nGroups of males mob the females, and attempt frantically to mate with them.  Sometimes there are penis wrasslin' matches as the males each try to be the one who gets his genetic material in the right location.\n\nFemales, especially after several males have already harassed her, will often roll away or otherwise discourage the males.\n\nBecause of the intense competition, the right whales have the largest testicles in the animal world (about the size of Volkswagens), and produce copious quantities of sperm.  They use the blasts of sperm to try and blast any of their competition's sperm out of the way.\n\nI've heard stories (I can't confirm if it's true) that on at least one occasion a Zodiac boat carrying whale researchers got too close to the action.  The female used the Zodiac to block her naughty bits, and the researchers found themselves in the middle of the battleground of two right whale penises.  Both males thought they were successful and let blast, coating the researchers with massive loads of whale sperm.\n\nIn Chris Moore's novel "Fluke", this event occurs to two female researchers, who promptly become lesbians.
40335
Some reptile species are parthenogenetic (from Greek: virgin + originate, generate). That is, the development of the ovum can be triggered without sperm intervention.\nAs a consequence, these populations are only formed by females and all the offspring are genetically identical to their mothers (unless there is some recombination at cross-over, which I'm not sure about). \nThere are only a few lizards and snakes that present this mechanism; see the links below for the best known parthenogenetic snake species (there are probably others that have not been studied yet). \nHere in Argentina we have some parthenogenetic lizards! :)
23543
In zoology, a hermaphrodite is an organism of a species whose members possess both male and female sexual organs during their lives. In many species, hermaphroditism is a normal part of the life-cycle. Generally, hermaphroditism occurs in the invertebrates, although it occurs in a fair number of fish, and to a lesser degree in other vertebrates.\n\nSee below for use of the term in plants.\n\nNote: The term "hermaphrodite" has historically been used to describe people with ambiguous genitalia or biological sex. The broader term intersexual is often used and is preferred by many such individuals and medical professionals. The term is still used by the pornography industry, though often as a synonym for transexual, as true human intersexuals are rare.\n\n\nIn animals\nSequential hermaphrodite: The organism is born as one sex and later changes into the other sex. \nProtandry: When the organism starts as a male, and changes sex to a female later in life. \nExample: The seabasses (Family Serranidae). These are a highly sought food fish complex made up of primarily groupers. Since even a small male can produce more than enough sperm to fertilize a huge number of eggs, while a female's egg output increases greatly with an increase in size, this strategy makes sense for an organism (fish in general) where over 90% of the eggs laid will not result in a fish that reaches sexual maturity. It has been shown that fishing pressure actually is causing a change in when the switch from male to female occurs, since fishermen naturally prefer to catch the larger fish. The populations are generally changing sex at a smaller size, due to artificial selection.
753339
In zoology it refers to organisms which have two distinct morphologic forms, where the offspring of each form is the opposite form. Typically one of the forms reproduces sexually, the other asexually. For example, some coelenterates have a free-swimming medusa (jellyfish-like) stage, and a sessile polyp (anemone-like) stage. The mature polyps reproduce asexually by budding off medusae. The medusae once mature reproduce sexually, shedding gametes into the water, and the resulting embryos settle to the bottom, attach to the substrate, and grow into polyps, which once mature produce more medusae ...
446332
Depends entirely on the species of star fish.\n\nThere are about 1800 different species of sea star (Echinoderms of the Class Asteroidea) and they occur in all of the world's oceans.  Some are adapted to live in warm, coastal seas and coral reefs, others prefer deep, dark cold environs.\n\nThere are even some that are found around the super-heated waters of the deep sea hydrothermal vents also known as 'black smokers'.
370678
The first example would be "halpodiploidy" that occurs in bees, ants and wasps. In this form of asexual reproduction, females lay unfertilized eggs. The eggs can then hatch without fertilization, giving an asexually produced male, or they can be fertilized by a male, giving a sexually produced female.\n\nA second example would be "parthenogenesis" (Greek for "virgin birth"), seen in some fish, reptiles and amphibians. One commonly studied reptile species, the lizard Cnemidophorus neomexicanus, contains only females. All progeny contain the exact genetic information as its mother, essentially making it a clone. The females still engage in lesbian sexual behavior, which is thought to stimulate the laying of eggs. No genetic information, however, is transferred during this sexual act.\n\nThere are many other examples, and the previous answer touched on a few. I would add that anthrax is a bacterium, and therefore NOT a many-celled organism.
429981
They are hermaphrodites.  Each delivers sperm to the other.  Each later lays eggs.
185508
Sure, ask a question with no answer.;-) \nThere is currently no information available about the breeding behavior of this species according to University of Texas Austin.  Because it is a cave salamander it is likely that there is no actual breeding season for this species. In a cave environment most or all seasonal cues such as changes in day length, or temperature are absent. \n\nBelow is a description of what is known about the breeding behavior of the Texas Blind Salamander, which are closely related taxonomically, geographically, and in habitat to the Cascade Caverns Salamander. It seems to be the only info available for any of the cave salamanders in TX. It's probably fair to speculate that their breeding strategies are similar or even the same.\n\n\nLittle is known about the reproduction of Eurycea (Typhlomolge) rathbuni. The species is known to be acyclic with females maturing and reproducing throughout the year, unresponsive to seasonal cues. This breeding cycle is typical of many cave dwelling species (Lofts 1974). Breeding of this species has been observed in the laboratory. The females assumes an active role in stimulating the male to mate. Her behavior is characterized by rubbing her chin along the male's back. If this fails to stimulate the male then she may scratch at him or fan her tail at him. She may even resort to nipping at his sides if he further ignores her advances. The male will deposit a spermatophore on a rock or substrate and the female will then pick it up with her cloaca (Bechler 1988).
83345
Here:\n\nhttp://myweb2.search.yahoo.com/search?p=devilfish+pictures&rs=0&fr2=rs-bottom&ei=UTF-8&fr=ks
668203
Jellyfishes belong to the Phylum Cnidaria(=Coelenterata) & Class Scyphozoa. The most common genus is Aurelia.\n\nIn jellyfish, mode of reproduction can be both sexual and asexual(by budding). Sexual reproduction is through two larval stages- planula & ephyra.\n\nThe life cycle of a typical jellyfish involves an alteration of generations in which the animal passes through two different body forms. The dominant and conspicuous medusa is the familiar form, while the smaller polyp form is restricted to the larval stage. Jellyfish are either male or  female and reproduce sexually. The reproductive organs (gonads) develop in the lining of the gut. During reproduction, the male releases sperm through its mouth into the water column. The sperm swims into the mouth of the female where fertilizationoccurs. Early embryonic development begins either inside the female or in brood pouches along the oral arms. Small swimming larvae (planula) leave the mouth or brood pouches and enter the water column. The larvae then seek a shaded surface and attach to the bottom, forming polyps. These polyps divide and bud into young jellyfish (ephyra). In a few weeks, an ephyra will grow into an adult medusa, thus completing the complex life cycle. Jellyfish normally live three to six months. \n\nVenom apparatus: Jellyfish are equipped with a specialized venom apparatus (cnidoblast) for defense and feeding. A capsule (nematocyst) inside the cnidoblast contains a trigger and a stinging structure. The stinging structure varies according to species, but generally consists of a hollow coiled thread with barbs lining its surface. Nematocysts are concentrated on the tentacles or oral arms. A single tentacle can have hundreds or thousands of nematocysts embedded in the epidermis. Triggers of nematocysts are activated when contact is made with another object. Pressure within the nematocyst forces the stinging thread to rapidly uncoil. The thousands of nematocysts act as small harpoons, firing into prey, injecting paralyzing toxins. Stings usually paralyze or kill only small creatures but some jellyfish are harmful to humans. Jellyfish do not "attack" humans. Stings occur when swimmers or beachcombers come in contact with nematocysts. Severity of stings depends on the species of jellyfish, the penetrating power of the nematocyst, the thickness of exposed skin of the victim and the sensitivity of the victim to the venom. The majority of stings from jellyfish occur in tropical and warm temperate waters. Most species off the southeastern coast are capable of inflicting only mild stings resulting in minor discomfort.
652387
http://www.oceanlight.com/lightbox.php?sp=Tamiasciurus_douglasii
271146
Sponges are aquatic sessile animals which scientifically known as Porifera. They can reproduce asexually by budding or branching at the base. \n\nThey can also reproduce sexually. They are hermaphrodites. Amoebocytes can divide to become sperm cells and liberated first. Similarly, eggs are produced and become zygotes after fertilised by sperm cells from another sponge.\n\nZygotes develop into flagellated swimming larvae. When they found suitable environment they attach to the substratum to start sessile life. \n\nThey have very strong regenerative power. Broken part can be replaced and fragments can regenerate to become new individual.\n\nAnd i think they eat plankton.\n\nhope this helps!
392040
Hope this sheds some light on it jessica.\n\n\nREPRODUCTION\n\nMost fishes are egg-layers, but many bear living young. Live-bearing fishes may be ovoviviparous, in which the eggs essentially simply hatch within the female, or viviparous, in which the unborn young are supplied nourishment through the mother's tissues. In some ovoviviparous fishes the embryo develops in the egg while the egg is still within its follicular covering within the ovary, and ovulation (or release of the egg) and birth occur at the same time. In other ovoviviparous forms the eggs are released from the protective follicles into the cavity of the hollow ovary, where development continues. In some viviparous fishes the walls of the egg follicle are in intimate contact with the embryo, supplying it with nourishment. In the viviparous sharks, a part of the oviduct, or egg channel, is developed into a uterus, where the modified yolk sacs of the young are closely joined to pockets within the uterus.\n\nIn live-bearing fishes and in some egg-layers, fertilization occurs internally, and methods have been evolved for introducing the sperm into the female's body. In sharks the pelvic fins of the male are modified into intromittent organs called myxoptergia, and in the male topminnows the anal fin is modified into a similar-functioning intromittent organ called the gonopodium.\n\nAt least three modes of reproduction--heterosexual, hermaphroditic, and parthenogenetic--are found in fishes. In the most common form, heterosexual reproduction, there are separate male and female parents, but even here there is considerable variation. In some live-bearing fishes, the female is able to store sperm for up to 8 or even 10 months, and this sperm is used to fertilize new batches of eggs as they develop. In some cases, a female may carry sperm from several males at once.\n\nIn hermaphroditic reproduction, a single fish is both male and female, produces both eggs and sperm (either at the same time or at different times), and mates with other similar hermaphroditic fishes. External self-fertilization occurs in one hermaphroditic fish, which sheds egg and sperm simultaneously. In another, internal self-fertilization may occur. In certain fishes there is a time sequence of hermaphroditism, young fishes reversing their sex as they grow older.\n\nIn parthenogenetic reproduction, unfertilized eggs develop into embryos. This is known to exist in at least one fish species, Poecilia formosa, of the Amazon River; however, even though development proceeds without fertilization in some of these females, mating with a male is still required to stimulate egg development.\n\nParental care also shows great diversity. Some fishes, like the Atlantic herring, form huge schools of males and females and freely shed their eggs and sperm (milt), and then abandon the eggs. Other fishes build nests and care for both the eggs and newly hatched young. Others have evolved methods of carrying the eggs with them, commonly in their mouths, but also in gill cavities or in special pouches on the body.
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Snakes lost their legs on land, not in the sea as previous scientists thought, according to new research by professor of biology S. Blair Hedges and postdoctoral fellow Nicolas Vidal.\n\n"Everyone agrees that snakes evolved from lizards and are close relatives to lizards," Hedges said. "What is controversial is the specific group, whether on the land or in the sea."\n\nScientists estimate that snakes evolved 150 million years ago, Vidal said. For many years, they believed in the terrestrial or land theory, which says that snakes evolved from lizards that burrowed underground.\n\nThen, seven years ago, the discovery of a fossilized marine snake with tiny hind legs fueled the marine hypothesis that snakes lost their legs in the sea. The marine snakes called mosasaurs are now extinct, but their closest cousins, the monitor lizards such as the Komodo Dragon, are still alive today.\n\nHedges and Vidal chose two genes and compared them in lizards and snakes to see how closely they are related. From statistical analysis of these gene sequences, they created a family tree.\n\n"These two genes have accumulated different mutations in the different species," Vidal said. "These differences between the species are used to build the evolutionary trees. Snakes are not closely related to the monitor lizards, which means that they cannot have marine origins."\n\nHedges and Vidal's research is significant because of the comprehensive scope of the snakes and lizards studied. They collected DNA from 64 species representing all 19 families of living lizards and 17 of the 25 families of living snakes, Vidal said.\n\n"We mostly acquired DNA from the soft tissues, blood, shed skin, scales and tips of the tails of the animals," he said. "A very small amount is needed, so we can get the sample without killing the animal."\n\nHedges and Vidal acquired samples from other colleagues, their own collections, fieldwork in South America and pet stores that trade exotic animals, Hedges said.\n\nSome of the samples were difficult to acquire because some snakes and lizards are limited to certain parts of the world, such as remote islands, but it was crucial to their study.\n\n"We felt it was important to analyze genes from all the lizard groups, because almost every lizard family has been suggested as being the one most closely related to snakes," Hedges said. "If we had failed to include genes from even one of the lizard families, we could have missed getting the right answer."\n\nA possible theory to explain why snakes dropped their legs on land is that limbs are not conducive to their burrowing habits, Vidal said.\n\n"The idea is that if you have limbs sticking out, it's difficult to get into small openings," Hedges said. "It's more advantageous, because it enables snakes to get more food and offers safety from predators."\n\nHedges and Vidal did not find the closest lizard relative to snakes, but they did succeed in eliminating the monitor and marine lizards as possibilities.\n\n"This study doesn't answer all the questions," Hedges said. "In most fields, questions aren't answered all at once. They're answered in increments, and in this study, we've ruled out the marine theory, but that still leaves a lot of possibilities."\n\nHedges and Vidal said they hope to find the closest relative to snakes in the next year.\n\n"The work by Dr. Hedges and Dr. Vidal is a tremendous contribution to the body of knowledge," said Bryan Fry, deputy director of the Australian Venom Research Unit at the University of Melbourne in Australia. "Their data provides strong evidence for the terrestrial loss of limbs."
180955
6 types?\n\ni only know 2 and there are live birth and by laying eggs\n\nyou can find your answer by typing  types of reproduction for fish\n\nif that dosen't work email me \ni am not a fish expert but i have experience with fish reproducing\n\nor you can check the libray for fish books\ntry looking uo for guppies\nthey reproduce really quick