In most cases, the female drops eggs in the water which
are immediately fertilized by sperm from the male
. Another way is for fertilization to occur within the females body before she drops them into the water. With the third and final method, the female retains the eggs within her body and the young are born alive.
Are fish asexual reproduction?
Animals that reproduce asexually are rare compared to the overwhelming majority that exist as males and females and reproduce sexually. … About 50 vertebrates are known to use
asexual reproduction
including fish, amphibians and reptiles.
Do fish sexually reproduce?
Wild fish reproduce in various ways depending on the species of fish. In most cases, the females release eggs into the water and they are immediately fertilized by sperm from the male. In the wild, fish
can easily reproduce when they sexually mature
.
Do fish mate by themselves?
Some species of fish reproduce by themselves
. These fish are females, and so are the young they give birth to. It's debatable whether this can actually be called ‘mating' but it is certainly a way to reproduce. The females may mate with males, but the sperm is not used for reproduction.
Do female fish have periods?
Fish do not have periods
. They have internal sexual organs and ovaries that produce unfertilized eggs once a year. When the eggs have matured, the female will eject them into the water for external fertilization
How long is a fish pregnant?
As examples, the female swordtail and guppy will both give birth to anywhere from 20 to 100 live young after a gestation period of
four to six weeks
, and mollies will produce a brood of 20 to 60 live young after a gestation of six to 10 weeks.
Are my fish fighting or mating?
If they are
fighting
, a fish that feels threatened is more likely to cower in a corner, not dive into the situation head on. … They're basically trying to protect their breeding ground, and a fish of the same species and sex is competition.
Do fishes get married?
In a nautical ode to their love story, one adventurous couple who met on the dating site Plenty of Fish have officially tied the knot … under the sea.
Can two different types of fish mate?
The simple answer is yes,
a fish can crossbreed
. There is a little twist, it can only crossbreed experimentally, not naturally. For instance, flowerhorns are a result of 2 to 3 species. There are some species which will hybridize (read: different species of fishes bred with each other).
Do fish get thirsty?
The answer is still no
; as they live in water they probably don't take it in as a conscious response to seek out and drink water. Thirst is usually defined as a need or desire to drink water. It is unlikely that fish are responding to such a driving force.
Which animals have periods?
Most female mammals have an estrous cycle, yet only ten primate species, four bats species, the elephant shrew, and one known
species of spiny mouse
have a menstrual cycle.
Do cows have periods?
After puberty, a heifer continues to have
regular estrous cycles every 21 days
(the normal range is every 18 to 24 days). The estrous cycle in cattle is complex and regulated by several hormones and organs (see Figure 1).
Will baby fish survive in my tank?
Not necessarily
. Many fish breed very easily and produce great numbers of offspring, simply because very few will survive to adulthood. The more fish in your tank, the more you will need to feed them, the more feces they will produce and the harder your filtration system will have to work.
Do fish get fat when pregnant?
The area where a pregnant guppy's abdomen meets the tail is sometimes called the “gravid patch”, or “gravid spot”. When pregnant, there is
a slight discoloration that slowly darkens as the guppy progresses through pregnancy
.
Does fish give birth through mouth?
Sometimes
the female fish will carry the fertilized eggs in her mouth
, or the male and female will trade off, which is called biparental mouthbrooding. Typically fish that are born via mouthbrooding are underweight at first and require recovery time to feed and grow.
How do fish act when mating?
If a male is
interested in the female he will flare out his gills, spread his fins and twist his body
. If a female is interested she will curve her body back and forth and turn a darker color. When the female is ready to mate, she will spend a lot of time near the bubble nest.
