The Ultimate Tropical Fish Quiz

By: Staff

4 Min Quiz

Image: refer to hsw

About This Quiz

When you were a kid you had a little fishbowl with one, lonely goldfish. Now you have the time and money to take this hobby more seriously, and you want to try and keep a beautiful tank full of tropical fish.

What is the average life span of a tropical fish kept in an aquarium?

Tropical fish kept in an aquarium usually live between two and three years.


When did keeping tropical fish become a popular hobby in the U.S.

Keeping tropical fish started becoming popular in the 1920s, and became all the rage after World War II.


Most tropical fish range between what size and what size?

The majority of tropical fish aren't very large; they are between one and five inches (2.5 to 12.5 cm) in length.


Why do most people prefer keeping freshwater fish?

Saltwater aquariums require a lot of maintenance. If you're just starting out, consider a freshwater tank.


How many varieties of freshwater tropical fish have been successfully kept in home aquariums?

There are more than 1,500 varieties of freshwater tropical fish that can be kept in home aquariums.


Of the 1,500 varieties of tropical fish kept in home aquariums, how many are readily available on the market?

One third of the 1,500 varieties of fish on the market are easily available for purchase. Some fish, however, must be special ordered at great expense.


What is the most popular aquarium fish?

Everybody starts out with a goldfish, and goldfish remain the world's most popular fish.


Why shouldn’t you keep fish in a fishbowl?

The opening of a fishbowl does not have enough surface area to allow oxygen to be absorbed and poisonous gases to leave.


What is the proper relationship between size of fish and volume of water?

For every inch of fish in your tank (excluding the tail) you need one gallon of water.


If you have five fish, each of which is one inch long, how many square inches of water surface must you have?

Fish tanks need a lot of water surface, and stuffing a tank with fish is bad for the fish. For five inches of fish you need 120 square inches (10 square feet) of water surface.


If you use an aerator, you can increase the natural capacity of your tank by how much?

Using an aerator to supply your tank with oxygen means you can double its capacity.


Why should you keep a freshwater tank out of direct sunlight?

Too much direct sunlight will cause a fish tank to grow algae, which are harmful to freshwater fish.


What is the appropriate temperature for a freshwater tank?

A freshwater tank should remain between 70 and 80 degrees F (21 to 27 C), and should never be allowed to fluctuate dramatically in temperature.


Why should you be careful not to overfeed your fish?

The food that fish do not eat will often decay, allowing harmful bacteria to develop in the tank. Feed your fish carefully and consistently.


Fish should not be given more food than they can eat in what amount of time?

Fish should feed for about 15 to 20 minutes. The rest of the food will not be eaten, turn to bacteria, and infest the tank.


The most common diseases among fish are fungal diseases caused by which of these?

Protozoans in the water will often cause fish to develop fungal diseases and white spots.


What can you do to treat a fish with a fungal disease?

Place the sick fish in a mild saltwater solution for a couple of hours, and it should be fine.


Guppies, mollies and swordtails belong to which of these categories?

Livebearers, whose eggs hatch while inside the mother, are very popular fish -- especially guppies.


What is the main challenge in keeping saltwater fish?

Saltwater fish don't need saltwater; they need seawater, which is not easy to reproduce or to maintain.


A saltwater tank must be made of what materials?

Glass and stainless steel are the only materials suitable for saltwater tanks. The way seawater reacts with other materials is harmful to fish.


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