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.
Why 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.
When do goldfish lay eggs in a pond?
Goldfish (including shubunkins and Sarasa comets,) Koi, Tench, Orfe and Rudd are all egg scatterers. Summer temperatures warm pond water and the female’s bellies start to swell up with eggs. You may notice that some of your fish are bigger and fatter than others, and they’re the females.
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 you know if a fish is a boy or a girl?
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.
Is my koi pregnant or sick?
Changes in behavior, such as erratic swimming, koi swimming upside down, abnormal feeding patterns or isolating themselves from others can indicate that your koi fish is sick. Physical symptoms like red gills, cloudy or popped eyes, and swollen abdomen are used to correctly diagnose koi fish diseases.
Why is my goldfish sitting at the bottom of the tank?
You indeed have a problem when a goldfish is bottom sitting. Possible causes are ammonia spikes (filter issues, changes in temperature, pH etc, a high volume of nitrates, overcrowded tank – causes most of these problems (40-50 gallons per common goldfish are needed).
Why is my goldfish so fat?
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. You can try to feed your fish less or healthier types of food, which varies depending on the species of fish.
How often should goldfish be fed?
Feed 2-3 times daily. It is important to avoid overfeeding goldfish as this can cause indigestion and/or contaminate the tank. In terms of the amount to feed, a good rule of thumb is to only feed an amount that the goldfish can consume in under two minutes or only feed as much as the size of the goldfish’s eye.
Are Goldfish aggressive?
Keeping at least two goldfish in an aquarium is recommended to provide companionship and promote activity. Solitary fish can exhibit depression and lethargy. Goldfish are generally not aggressive so they can be kept with most community fish provided the other fish are larger than the size of the goldfish’s mouth.
Will a big goldfish eat a little goldfish?
Gold fish eats whatever can fit into mouth, large goldfish can/will eat any other fish or goldfish same/smaller size of mouth.
How old are goldfish before they breed?
The chosen female is usually two years old, while the males can be only half that age.
Do goldfish mate in a tank?
You can breed goldfish in an aquarium quite easily and many breeders remove their chosen pair or trio (one female and two males) of fancies from their tub or pond and transfer them to a prepared tank.