guppies stay pregnant for about a month before giving birth, other fish take longer, and others lay eggs (don't get pregnant). depends on the fish
9weeks
The gestation period for a Rhiniceros is about 16 months.
They dive deep into the ocean and get fish, they can stay underwater for a long time, so it is no problem.
Until the baby is big enough not to be injured by the male
Female Oscar fish will appear rounder in the belly area if they are pregnant. Look for a more pronounced bulge near the anal vent. Additionally, the female may exhibit changes in behavior such as increased aggression or territoriality.
Do you mean how long they stay pregnant? if so its 9 weeks.
Possibly,but it would be best if you put her in a separate tank,like a 10 gal.because the other fish might eat the baby fish if you let her stay in there with your other fish.
well a beluga can stay for 12-15 months that is a long time
40 weeks
3 years
5 months
9-18 months
5 months
yes
12 days.
This is going to depend on the type of fish; many fish, such as goldfish are egg laying, so they do not get pregnant. Other types of fish, such as Mollies are livebearing and their gestation is typically around 21 to 28 days
When you are pregnant you will not have a period. You may have spottings though. Hope this helped :)