Most fishes mate without penetration, but there are many exceptions
. All male elasmobranchs (the sharks and rays) have claspers, paired organs that the male inserts into the female's genital opening for sexual intercourse.
Do sharks have sex?
How often do sharks have sex?
As often as possible
. Unlike swans, who mate for life, shark sex “happens when it happens,” Burgess says. “It's like 1 o'clock in the morning, and the bar's closing.” Male sharks can sniff out ovulating females, who give off pheromones (chemical signals) when they're ready for mating.
How do I know if my fish are having sex?
You can determine the sex of your fish by
inspecting its gonads (reproductive organs), which are located towards the top of the gut cavity
. Mature female fish will have orange ovaries and male fish will have white testes (see photos above).
Do fishes kiss?
When there are more fishes in the tank, kissing fishes realize the crisis. Because the kissing fish itself does not have a strong fighting power, the most commonly used weapon is its jagged mouth.
When they kiss, it means they are fighting with each other.
Can fish change sexes?
Researchers have identified more than 500 fish species that regularly change sex as adults
. Clown fish begin life as males, then change into females, and kobudai do the opposite. Some species, including gobies, can change sex back and forth. The transformation may be triggered by age, size, or social status.
How do fish get pregnant?
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.
How do you tell if a fish is pregnant?
As your female fish becomes pregnant,
she will grow a bulge at the back of her abdomen
. This typically appears over the course of 20-40 days. Does your fish have a red or black spot? Sometimes, when a female fish is pregnant, she will develop a “gravid spot” on the abdomen.
Do sharks have balls?
Testes. Most male fish have two testes of similar size.
In the case of sharks, the testes on the right side is usually larger
. The primitive jawless fish have only a single testis, located in the midline of the body, although even this forms from the fusion of paired structures in the embryo.
Does a shark poop?
So, do sharks poop?
They sure do
! Every living animal that consumes food has to have a way of getting rid of waste. Sharks are no different.
Can you get pink fish?
Farm-raised salmon is naturally gray; the pink color is added.
Wild salmon is naturally pink due to their diet
which includes astaxanthin, a reddish-orange compound found in krill and shrimp.
How is a first kiss?
Part your lips slightly and press them against their lips.
Gently kiss them for several seconds. Try not to get any of your saliva onto their lips. It's okay to keep your lips pressed together during your kiss. Don't open your mouth or use tongue during your first kiss.
Can a fish fart?
Biologists have linked a mysterious, underwater farting sound to bubbles coming out of a herring's anus.
No fish had been known to emit sound from its anus nor to be capable of producing such a high-pitched noise
.
Do goldfish have genders?
Male goldfish and female goldfish have visible differences in their pectoral, or front, fins
. These differences can be difficult to spot if you have particularly active goldfish. Males have longer, narrower fins than females, while female goldfish tend to have thicker, shorter fins.
Do male fish get pregnant?
Male seahorses, pipefish, and sea dragons are the ones who get pregnant and give birth to their young.
How do fishes poop?
So, how do fish expel their feces? Well most of them will expel their feces
through an anal vent (also called a cloaca)
, which is simply an opening for all wastes to leave the body. This includes not only feces but also urine, reproduction, and sometimes eggs or sperm if needed.
Do fish only mate with the same breed?
Right.
Fish will mate with a species outside their own if the male's coloring is attractive enough or if the female can't see him properly
, according to new research.
How long are fish pregnant for?
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.
How do fish deliver babies?
Most fish release thousands of eggs, scattering them in the water where the male fish fertilize them
. The eggs develop and hatch into larvae (baby fish) without any help from the parents.
How do goldfish have babies?
Goldfish mate by chasing each other until the female goldfish releases her eggs. The male goldfish then releases his “milt”, which fertilizes the eggs
. What is this? Assuming the eggs don't get eaten, baby goldfish will hatch around a week later.
Do sharks have vaginas?
When a woman is aroused, squalene is secreted allowing the clitoris and labia to swell up and prepare the body for sex.
In sharks, however, squalene is far less sexy. The compound is found in the livers of sharks
and is believed by some cultures to have miraculous effects.
Can male sharks get pregnant?
(Males have an XY sex chromosome pair.) Even though these sharks don't seem to need a male around to make babies,
they shouldn't ditch sexual reproduction altogether
, Chapman said. For one, the blacktip and hammerhead sharks that reproduced without mating only produced one pup, rather than an entire litter.
