
1. A CHOICE OF HABITATS
Aquariums are a popular type of home. It is a great way to keep a wide range of marine life in your home. Like any pets, keeping fish takes time, money, planning, and your attention.
You should keep in mind that there are many different types of fish available for an aquarium, but you must decide on the kind of habitat you want to create before you acquire your very first fish. In other words, if you don’t know what kind of environment you want your fish to live in, it’s best to stick to something simpler and easier to maintain.
When choosing which type of fish to purchase, check online reviews to make sure it will be happy and can live in your type of aquarium.
Chosing a fish for aquarium is a matter of personal taste.
Some fish will thrive in a cooler environment and others will prefer warmer water. Choosing the perfect environment is one of the most important steps in keeping your aquarium healthy. In a cold water tank, most tropical fish will not survive more than two or three days.

COLDWATER FISH
Coldwater fish can live in unheated tanks. These species are often considered to be inexpensive to maintain and keep, but they are still bright and attractive and make a great centerpiece for any room in a typical indoor aquarium.
Goldfish are the most common and widely recognized coldwater fish.

TROPICAL FISH
A heated tropical aquarium can be maintained with the minimum of effort or expense. It’s a great way to relax and entertain guests or have a mini-oasis in the house.
A warm water aquarium is an ideal spot for keeping tropical and tropical-like fish. These fish thrive in warm water environments and are best kept in this type of tank because they prefer it over colder water temperatures.
You must decide what type of fish you want to put into your tank before you actually acquire your first fish.
What kind of aquarium?
Aquariums can be expensive, so knowing what kind of fish you want to keep first is a good idea. Let’s take a look at the different types and see which one is best for you.
One of the most important factors to consider when purchasing a aquarium is size. Decide how big of a tank you want. If you have a small living space, you might want to consider a small aquarium with small fish and plants. If you have a large space, you might want to choose an aquarium that can hold a larger amount of water.
In this guide, we’ll be looking at two types of aquariums – coldwater and tropical.
COLDWATER AQUARIUM
Coldwater aquariums are often smaller than tropical tanks. They are typically used for fish or amphibians that need a smaller home and can survive in cold water environment.
TROPICAL AQUARIUM
Tropical aquariums are generally more expensive than coldwater tanks. They are often built to hold large groups of fish or corals, making them suitable for reef tanks.