Males are often slimmer but larger-bodied than females and are more vibrantly colored. The dorsal and anal fins of the male are more pointed, larger and more flowing than in the female. In many species, the male
will display egg-shaped markings on the anal fin
known as egg spots.
How can you tell a female fish?
This is the fin that sits under the fish, just behind their anus. Male’s have long, pointed anal fins, whereas the females will have a
shorter, triangular-shaped anal fin
. Do not count on color to tell you the difference!
How do you know when fish are pregnant?
Pregnant female fish often
develop a “gravid spot” on the abdomen near the rear vent
. This is typically black or bright red, and grows more pronounced over the course of the pregnancy. Some fish always have this spot, but it will typically grow brighter or darker during once the fish is pregnant.
How do I know if my fish are mating?
Mating Ritual
Signs that your goldfish are ready to mate include
white spots along the gills of the males
, and the female will become fatter and more rounded. The male will then chase the female around the tank to encourage her to release her eggs.
Is my gold fish pregnant?
The first thing to know:
there is no such thing as a pregnant goldfish
. These fish do not carry live young within them until gestation, and they do not give birth to live fish. Goldfish are an egg-laying species.
Do goldfish eat their babies?
A
goldfish will likely eat their own babies
because when they mate they end up producing hundreds of eggs. Goldfish don’t have any paternal instincts, so they don’t recognize their own babies. This means that it’s highly possible that they will eat their own babies if they are in the same tank.
How do fish mate?
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 long can a fish be 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.
How do fish mate in a fish tank?
1. Live-bearing: In this type of mating, the
male fish transmits sperm into the female with the aid of the anal fin
– sometimes called ‘gonopodium’ since it is adapted for insemination. The released sperm then (internally) fertilize the eggs stored in the oviduct of the female.
Can female fish lay eggs without a male?
As Charles stated,
females can lay eggs without a male
, however it requires the male to fertilize the eggs.
Why are my fish chasing each other?
Fish chase each other for a variety of reasons, such as defending their territory,
establishing dominance, competing for food, and mating
. Even fish that are typically docile fish may chase others because of constant stress. This could be due to incompatible tank mates, poor water conditions, or an overcrowded tank.
How long does it take for fish to get used to each other?
A smooth transition is an ultimate way to acclimate the fish to its new home. Most people will tell you that it takes about 15 minutes for fish to acclimate to an aquarium. While this is partially true, it takes
at least an hour
for a new fish to adjust entirely to a new environment.
How do you know if a fish is spawning?
Watch the male fish behavior. Around the time of spawning,
they may swim in groups along the surface of the water or the edges of the pond
(see Reference 1). The males will chase the females around the pond and attempt to beat the eggs out of her when the fish begin spawning (see Reference 1).
Do fish play with each other?
There is some evidence to show that
fish do play with objects
. Shoaling or schooling fish be also known to be social in nature. If they are swimming after one another with no signs of aggression, or for no apparent cause, it may be that they are simply having a good time playing.
Do fish only mate with the same breed?
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. … Fish will mate with a species outside their own if the male’s colouring is attractive enough or if the female can’t see him properly, according to new research.
How do goldfish poop?
Well to answer the question: Yes goldfish do poop. Goldfish have an
anus located above their tail fin but below most of their abdomen
.
Why is my goldfish so fat?
The main culprit for freshwater aquarium fish is
Dropsy
. … Overfeeding – Sometimes a fish may become fat or swollen as a result of his diet. Often, overfeeding or the wrong types of food can cause constipation and other digestive issues.
How do you tell if your goldfish has laid eggs?
When goldfish are about to lay eggs, they usually
start to move more sluggishly
. Take note if your goldfish is moving slowly or seems to have trouble getting around. You may also notice your goldfish “nesting,” or spending most of the time hiding near shelters or plants.
Why is my goldfish at the bottom of the tank?
Usually goldfish sit at the bottom of the tank
due to not feeling well for some reason
. Improper water conditions, parasites, stress, GI problems, and swim bladder problems can all cause a fish to sit at the bottom of the tank.
How long does it take for a female goldfish to release her eggs?
Hatching Time
After release and fertilization, goldfish eggs hatch in
two to seven days
. In water at 84 degrees Fahrenheit, fertilized goldfish eggs hatch in 46 to 54 hours; in water at 70 to 75 degrees Fahrenheit, they hatch in five to seven days.
Are goldfish born black?
All metallic Goldfish start off silver gray,
turn black
, then slowly fade to a light yellow before their colour deepens to orange or red, sometimes with patches of white. Metallic Goldfish can start changing colour within 3 months of hatching. Goldfish change colour at different rates.
How big is a 1 year old goldfish?
The goldfish are just over 60% of their first-year size, measuring
about 1.25 inches
.
Can goldfish lay eggs without male?
Females can lay eggs whether there is a male around them or not, but the eggs that
she deposits will be infertile
.
Do fishes kiss?
In fact, its mostly likely the opposite – they are fighting! Fish who touch their fishy
lips together
(like “kissing” gourami) or lock to together in a passionate “kiss” (like betta fish) are most likely sparring or engaged in battle.
What fish died after mating?
Fish are famously fertile egg producers.
Pacific salmon
die after spawning—the chinook species, for instance, lays up to 5,000 eggs. American eels can produce up to 30 million eggs at a time, but their sex lives are still a mystery, notes John Casselman, a professor at Queen’s University in Ontario, Canada.
Do fishes mate for life?
“Instead we found that partners matched egg production and remained in primary partnerships for the long term.” For their entire adult lives, the fish
mating partners come together for two hours each day before dusk
in their refuge area, or spawning territory.
Do fishes sleep?
While fish do not sleep in the same way that land mammals sleep,
most fish do rest
. … Some fish float in place, some wedge themselves into a secure spot in the mud or coral, and some even locate a suitable nest. These periods of “suspended animation” may perform the same restorative functions as sleep does in people.
How often do fish lay eggs?
Sometimes if the water temperature stays warm long enough, the fish will spawn more than once. In warmer climates outdoor goldfish might spawn
two or three times a season
. In aquariums, if the water temperature remains pretty much the same, they may spawn all year long.
How do fish mate goldfish?
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 do I do if my fish has babies?
After Your Fish Gives Birth
For many species, it’s important to keep
fertilized eggs
and newly hatched fish, or fry, separate from the adults. Some fish eat their own young while others eat the young of other species. Keeping the fish eggs and fry separate from the adult fish may give them a better chance of survival.
Do baby fish need their mothers?
They don’t lay eggs; their young come out swimming. And they are prolific breeders as well. Molly babies get no protection from their parents. The tiny fish are
just as likely to be eaten by their own mother
as they are by other fish in the aquarium, so to survive they’re going to need a little help.
How do you encourage fish to breed?
When the rains come the forests and wetlands flood, bringing
fresh water
, an abundance of food and space to spread out and breed. So research your fish’s temperature range and conduct a series of water changes over a few days, gradually bringing the water temperature down to the fish’s lower range.
Do female fish always have eggs?
The Reproduction of Fish
All fish have internal sexual organs, and some have evolved external organs as well.
Female fish have ovaries that produce eggs
while male fish have testes that produce sperm. … Since fish reproduce sexually, if eggs are not fertilized, they don’t produce any young.
Can male fish lay eggs?
It happens in species of fish that aren’t hermaphroditic, and
it doesn’t help reproduction
. In severe cases, it can make fish sterile. “Intersex definitely is not normal,” says Don Tillitt, a U.S. Geological Survey toxicologist. The presence of female eggs in male testes indicates some kind of hormonal confusion.
What months do fish spawn?
- Pike. Spawning season: February-March. …
- Walleye. Spawning season: March-April. …
- Sauger. Spawning season: March-April. …
- Muskellunge. Spawning season: April. …
- White Perch. Spawning season: April-May. …
- Carp. Spawning season: April-June. …
- Yellow Perch. …
- Largemouth Bass.
How long does fish spawn last?
When the carp begin to spawn, if the water temperature remains consistent they may just start and finish in a few days or maybe
1-2 weeks
. But in some circumstances where the water temperature fluctuates a lot, this process could be drawn out over months.
