This process is very similar to what mammals do. However, the gestation period could vary from one species to another. Even so, the most common time period is about 4 weeks.
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.
Do fish hide when they are pregnant?
Some egg-laying fish create nesting areas to keep their eggs safe. These may look like small pits or gravel mounds, but they are not always visible.
Do fish get fat when pregnant?
Fish may become fat or swollen due to pregnancy and develop a gravid spot. A bloated fish may have scales with a pinecone-like appearance.
Will baby fish survive in my tank?
It is possible to raise baby fish in your main tank, but generally, few will survive this. Larger fish will see them as tasty snacks and even vegetarian fish may be tempted. They can also suffer injuries from being chased and bullied.
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.
Why is my fish chasing each other?
Chasing behavior can be of three types: male rivalry to determine dominance, males courting female fish to mate, and females chasing male fish. In this last case females may either want to show they are ready to mate, or want to chase away over-eager male fish.
Can fish kill each other?
There are fish that are known as social fish, these can even become aggressive. They do not generally have territories, but they will fight for positions in a group. … This is what can start the fish killing. It may only start with aggressive behavior, or harassment, or damage, but can end in a fish killing.
Do fish die after having babies?
Their studies show that most baby fish are destined to die because they are unable to feed from their environment due to a process limited by the physics of water. “Unlike mammals, most fish release eggs and sperm externally in the water. There is almost no maternal care.
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. …
- When moving the fry to a separate tank, use the water from the original tank. …
- Some adult fish are caretakers. …
- Create a good home for the fry.
13 июл. 2019 г.