What are those mini snail things on the inside of a fish tank?

Today one of my fish died. I don't know if it's because of the PH or the temperature. Help!

sooo I have a fish tank and my mom bought plants like real plants for it and then we put um in the fish tank and we found a s...

What fish can live to be over 100?

Like how do I clean out all the fish poop out of gravel on the bottom of a fish tank?

I have a male betta in a seprate tank and I was woundering if I could put it in my 10 gallend tank with 5 goldfish, 1 tetra, ...

well me and my friend randomly decided to get some fish, but we dont know how many fish are allowed in the tank we've got. it...

I have a 20 gallon fish tank with really bad callcium or hard water build-up on it. How can I get it off?

I have 2 fish in my fish tank, (not salt water) my filter stopped working, what can I do? Do I move them from that tank and p...

I have 5 tiger fish one large orange parrot fish and one small white parrot fish three molly fish one angel fish,,are they c...

please I need one I have two sharks that get up to 18 inches long and all I have is a 10 gallon