How do I clean gravel in a fish tank?

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

I just bought a fish tank not even a few months ago and I cleaned it all out when my fish batch of fish died and then I put m...

What fish can live to be over 100?

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...

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...

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

I just bought 5 fish. I have an aquarium with a filter, but the water turned cloudy. First my 2 Mosquito Fish died; then my P...

I have a 55 gallon tank with an oscar. what other fish could I put in the tank? I had a jack dempsey in their, but the osca...