The best types of fish for a fish tank

So far there are almost 28,000 documented fish species, many of which are part of the marine habitat, and many others of rivers and freshwater. As you can see, the variety of fish is enormous, however, not all of them adapt equally to an aquarium or fish tank. If you want to care for aquarium fish—or freshwater fish—in this article we'll show you how to care for them.What are the best species to start doing it?We'll tell you about the most suitable types of fish for aquariums and freshwater bonitos. Keep reading this article for more information!

Fish for aquarium: Pufferfish

Pufferfish come in several types. There are many species of this type of fish that adapt perfectly to living with other types of fish since they are not generally aggressive. The freshwater pufferfish, whose scientific name is Tetraodon Nigroviridis, adapts to a temperature from 24ºC to 28ºCThese fish usually have a length of 17 centimeters And although they are somewhat territorial, if given the right conditions, they can coexist perfectly with other species. They have a life expectancy of 18 years and in an aquarium They will be able to live perfectly for 10 yearsThe aquarium, in this case, should have a capacity of 150 liters and the pH should be between 7.5 and 8.5.

Fish for aquarium: Rasbora Galaxy

It is another of the most popular and easy-to-care-for freshwater fish out there. This fish stands out for its pretty colors and its tiny size —between 1 and 1.5 centimeters—. The Rasbora Galaxy is a fish that is on the borderline of being considered a cold water fish, since the ideal water temperature of its habitat is around 22ºC and 28ºCIt's advisable to house this fish with up to 10 other specimens to achieve a more natural and hierarchical effect. This fish's name comes from its metallic blue coloring with white and yellow spots, reminiscent of the colors of the galaxy.

Fish for aquarium: Paradise Fish

It is a kind of freshwater and coldwater fishThat is, it must coexist with other cold water species with a temperature of between 10ºC and 22ºCIn fact, it can withstand very cold temperatures, close to 0°C. However, the Paradise Fish is not the best species to keep in a community aquarium, as it is somewhat aggressive and territorial, so it's important to be sure which species it gets along best with.

Fish for aquarium: Angelfish

It is one of the the most beautiful fish species that exist. This is a very social fish that needs companions of the same species to maintain good health and live happily. It is one of the most popular tropical fish species in the aquarium world. This fish is usually of a size 14 to 16 cm long and 20 to 22 cm tall. It has a triangular shape due to its dorsal and anal fins. It also has a large caudal fin. These fish can vary in color, and can be found in opaque shades, greens and blues, and even orange and black. They are easy to care for and very pretty.

Fish for aquarium: Koi carp

It really is an ideal fish for ponds, although it can also fit in large coldwater aquariums —with a minimum capacity of 200 liters—. This fish is one of the most common in the world and usually has a size of up to 90 centimeters —75 centimeters in aquariums—. It is a quiet species and must live with other large fish, as their voracious appetite can lead to other species becoming their food. Koi carp are omnivorous fish that feed on invertebrates, algae, crustaceans, other fish, and plants. You can offer them prepared foods, supplementing their diet with many of the vegetables you eat at home, such as lettuce or peas. Therefore, they are another of the easy-care fish we analyze in this article.

Fish for fish tank: Bettas or Siamese fighting fish

Is one of the beautiful freshwater fish most popular. These animals are native to Thailand. They have vibrant and striking colors and are notable for their long fins that unfurl and comb in the water, creating hypnotic and relaxing visual effectsThis species typically measures approximately 6 cm in size and requires at least 20 liters of water to survive. However, these species are highly territorial, so two males cannot be kept together in the same aquarium due to their aggressiveness.

Fish for aquarium: Discus fish

One of the kings of the aquarium. These types of fish They come from the Amazon and these are species with very skittish behaviors. Their shape, size, and impressive colors make them a beautiful freshwater fish species ideal for those who love aquaristics. Now, this species is fragile and very sensitive to variations depending on the aquarium conditions, so it requires special care. This type of animal is susceptible to fungal attacks, as well as other diseases. It is recommended to have at least four discus fish and an aquarium with at least 300 liters of water.

Fish for fish tank: Catfish

This is a species of aquarium fish that is essential for any aquarium enthusiast. The Catfish spends most of its time in the bottom of the fish tank looking for food scraps, which is very useful for maintaining a clean environment. These fish are available in a wide variety of sizes and colors. They get their name from the fish's distinctive tentacles or barbels that extend from the sides of the lower and upper jaws and are similar to a cat's whiskers. Currently, there are more than 3.093 species of catfish.