News of Fish Questions

I have a pregnant fish and she has been pregnant for 2 months. She is getting really big.
no her scales r not raising and she is just a tropical fish. can fish stay pregnant longer then 28 to 30 days?

Im conducting an experiment that involves testing how much fish food is consumed in different temperature conditions by trpical fish. How do you suppose it will be affected? (more food consumption, less, unafected?)

I plan on getting a community tropical fish tank with my biggest fish being an angelfish (adult), when cleaning the tank what happen to the fish, do thy need a small tank or bags or something?

If they do, where can i get one? Are they expensive? What do i have to feed them? And also, i have a bubble molly, and he just sits on the gravel nnot swimming. is something wrong?

How often to i replace my filter in my tropical fish tank.?

So the fish will live comfortable
or can u have like ANY small tropical fish living in a 2 Gallon?

I have a two tropical fish and need to clean out the tank what all do i need to do as in putting salt in it and cleaning it what steps

I can't remember if it's two inches of fish to a gallon or an inch to two gallons. Lol, could someone help me out!
Thanks everyone! I've kept fish before, but it's been a couple years since I've kept anything but Bettas. =)

Does anyone know what fish is the best to buy for a heated tank, 125L and where to buy it in the UK ?

I know quite alot about tropical, and was wondering if anyone knows how to get a job with tropical fish.