What would cause a tropical fish to die after only a few weeks?
It could be they were sick BEFORE you bought them. Often times fish that are bought at pet stores don't live very long. I myself had a fantail goldfish bought at a small pet store that lived 6 years. But that seems to be the exception, not the rule.
I would look at all the fish in the store before I bought one. Often times what other fish look like might be an indication of how well the fish are. Fish are finicky. They require such care, and a certain environment to survive, so it can be tricky to care for them.
I think it could be new tank syndrome.When you firstset up your tank you must always (seed)your filter.To do this add only 1 or two hardy fish and feed sparingly,you can also buy a product called filter start which will let you add more fish after aweek or two.youshould also test your pH,nitrite,and ammonia levels,ammonia is a killer of fish.
No goldfish would prefer to have a lower temperature than any type of tropical fish, however some goldfish can withstand higher temperature if they are slowly acclimated to it! But in the long run goldfish would be happy with other goldfish and tropical fish with tropical fish... there is a reason you don't see the goldfish with the tropical fish in a good aquatic store.
TROPICAL WATERS The most tropical waters would have to be in the Kenya, and in the Bahamas. In tropical waters theres tropical liles, fish,red tropical lilly's, and unique fish. In my opinion I would say that I think tropical waters are cool. My dad went under the Bahamas and saw lots of cool and unique things. by, coachy khan
The word tropical simply means that something is from the tropics; ie, near the equator. There are two kinds of tropical fish; tropical freshwater and tropical marine. When someone says 'tropical fish' in a pet store, or in the context of an aquarium, they generally mean tropical freshwater. Marine fish are simply fish that come from the ocean, ie, they are saltwater fish.