Aquarium, Marine and Freshwater fish

Fish types and their features all in one place!

Learn about all aquarium fish, marine fish, freshwater fish, and much more. All the fish varieties you’re curious about in one place!

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Fish Types

Beta balığı

Siamese Fighting Fishs are native to the slow-flowing waters, swamps, and shallow lake waters of Asia.

Unfortunately, today bettas are innocent and equally noble fish that are traded by being kept in small plastic containers. The reason for their other name, which translates to ‘Fighting Black Fish’, is, as the name suggests, that they are not a very peaceful species.

However, let this behavior not discourage you from keeping them. These fish have a lot of character and are among the rare species that can truly recognize and befriend their owner.

For more detailed information about betta fish and their species, you can visit our related category.

Japon balığı

Approximately 2000 years ago, thanks to Chinese fishermen, the Goldfish was domesticated and found its place in aquariums and ponds as an ornamental fish.

Although the primary colors of goldfish are known to be yellow today, they originally had a gray-green hue.

These fish are extremely resilient species. They can withstand tough conditions like potential pH fluctuations, low oxygen levels, and inappropriate temperatures.

However, contrary to what pet stores might suggest, it’s not appropriate to keep them in 2-3 liter bowls without oxygen, under very difficult conditions.

To get to know goldfish more closely, you can immediately visit our related category.

Sarı prenses ciklet

The Electric Yellow Cichlid is one of the most popular aquarium fish that you can see in many homes and workplaces you visit.

Its vivid colors, reminiscent of marine fish, might be the reason it’s a first choice among Cichlid species.

In our country, standing out among 1350 different species of cichlids known for their durability and beauty, it is a proven species.

For information about all cichlid species and their features, you can visit our category page.

Lepistes balığı

Guppies have been an integral part of the aquarium hobby for decades.

Today, guppies taken from the wild have, through selective breeding, acquired various colors, patterns, and tail shapes.

Because of their peaceful nature and compatibility with many species, they have been among the top choices for those setting up aquariums.

Take a look at the category right away to discover their magnificent appearance.

Çöpçü balığı

Whether you are an experienced aquarist or someone not involved in the hobby, you must have certainly heard of the catfish.

Having many species and a wonderful character, the catfish is an extremely friendly species. This peaceful species just focuses on its own tasks without disturbing other fish in the aquarium.

The Panda Corydoras, the most well-known species, is the most preferred among its varieties. The reason for its name is the panda-like spots on its body.

If you are curious to know more about the catfish, visit the category right away.


Anchovy is undoubtedly one of the first to come to mind when talking about edible fish varieties. In a nationwide survey in Turkey, it has proven itself by ranking first.

Found abundantly in the Black Sea and Marmara regions in our country, the anchovy also lives in the waters of the Azov and Mediterranean Seas.

This type of fish, an indispensable product of Turkish tables, is also a fish rich in nutritional value. The first rule to pay attention to when buying anchovies is their freshness. There are a few points you can look at to determine if they are fresh.

For anchovies to be fresh; their scales and eyes should be bright white, the insides of their gills should be bright red, their belly should be flat, and lastly, when thrown into the water, they should sink to the bottom.


The horse mackerel, a member of the mackerel family, is a species that can be caught throughout the year. Many who start fishing with a rod and line often first encounter the horse mackerel.

It has many varieties, with the black-eyed and yellow-winged types being among the primary ones. Their adult size can be around 25 cm.

The Black Sea and the Atlantic Ocean are their main habitats. Swimming close to the surface and in schools makes them easier to catch.

After anchovies, horse mackerel is the next preferred choice, and it reproduces in the spring and summer seasons.


Sardine, resembling anchovy in appearance, is a fish that can go stale quicker compared to others. After being caught or purchased, it should be consumed immediately or stored in the freezer.

This fish, which has proven itself with its taste, is also used in the production of fishmeal and fish oil. Additionally, it is also sold in canned form.

Able to live in all of our country’s seas, sardines are most commonly seen in the Marmara and Aegean seas.

Since they also live in schools, they are easy to catch. If you want to eat them fresh, the best period is between June and October.


The bonito fish lives in schools, is boneless, and has tasty meat. This fish, which prefers warm and temperate waters, also has numerous health benefits.

Depending on its species, its adult size can range between 20cm and over 70cm.

The best time to consume it is between September and February, which is when the bonito is at its fattiest.

Bonito is particularly rich in iron, protein, vitamin A, folic acid, phosphorus, and potassium in terms of nutritional value.


Sea bass, when young, live in schools, but in their adult stages, they tend to be solitary. Their adult size is around 50-60cm, they have scaly skin, and their meat is quite tasty.

They are among the fish types rich in vitamins A, B1, B2, B3, B5, B6, B12, D, and E. The best season to consume sea bass is between February and May.

They can be found in the waters of our country, specifically in the Mediterranean, Black Sea, and the Sea of Marmara. They prefer coastal areas and cold, temperate waters as their habitat.

Sea bass is not only found in saltwater but is also one of the fish species that can thrive in freshwater.


Trout farming is practiced not only in our country but also in many countries worldwide. Due to its high nutritional value and easy care and cultivation, many production ponds have been established.

Trouts are close relatives of the salmon. Originally a sea fish, this species can also live in freshwater.

In their adult sizes, they typically measure around 20cm in length and weigh about 1.5kg. It is known that some varieties can reach up to 80cm in length and weigh 10kg.

The best time to consume them is during the summer months, both for their taste and their higher nutritional value.

Yayın balığı

The catfish is the largest freshwater fish species. In 2005, a catfish weighing 293kg was caught in Thailand.

Unlike fish found in artificially made lakes, the meat of old catfish found in their natural habitat is not sweet.

The catfish chosen for eating should definitely not be old. The meat of young fish is quite tasty and boneless.

In our country, catfish, which is a favorite of rod fishermen, can be found in many regions.

Sazan balığı

Carp, which has dozens of different species, is hunted in our country both for sport fishing and for consumption.

Among them, the largest species is the Grass Carp, which can reach up to 25kg in weight and 80cm in length.

The taste of their meat can vary greatly depending on where they are found. It’s a fish that is laborious to prepare and is inexpensive.

It’s one of the most consumed fishes in our country. They prefer lakes and slow-flowing rivers as their habitat.

Kadife balığı

They are also known as velvet fish or velvet carp. They belong to the carp family and are a fish with tasty meat.

They live in the bottom parts of slow-flowing lakes, dams, and other freshwater bodies. They have a few prominent features that distinguish them from traditional carps.

Their tails are thick, their skins are very soft, and they have a greenish color tone. Moreover, they get their name from the softness of their skin.


Salmon is a very delicious fish species that lives in both freshwater and brackish waters.

A light-colored belly and dark gray back are the distinctive features of salmon. However, due to their hormones, the color of these fish varies throughout their lives.

They can grow up to 1.5 meters and weigh up to 35kg. When they become adults, they live in the seas and return to freshwater to reproduce.

The juvenile fish that grow in freshwater also return to the seas when the time comes and continue their lives.

Frequently Asked Questions

How Many Types of Fish Are There?

Considered as the global database for fish species, FishBase stated that as of 2022, the total number of fish varieties is 34,800. An average of 250 new fish species are discovered every year. Furthermore, scientists estimate that there are around 3.5 trillion undiscovered fish.

How Many Types of Fish Are in the Sea?

As of today, it has been determined that there are almost 20,000 fish species in oceans and seas. However, as you would agree, determining fish varieties is a very challenging task and this number is constantly variable depending on certain factors.

What is the Most Delicious Fish in the World?

Among so many fish, it’s impossible to choose just one as the world’s most delicious fish. However, there are a few fish species, without ranking, that you might find delicious. These are: Tuna, Sea Bass, Cod, Salmon, Brown Trout, Grouper, and Catfish. It’s also very important to taste these fish when they’re cooked properly by skilled hands.

Which Fish Are The Most Beneficial?

Seafood, especially fish, are very beneficial foods containing high levels of nutrients and protein. The fish that contain the most Omega-3 are bottom-dwellers that live in cold waters. Accordingly, the most beneficial fish are Mackerel, Tuna, and Salmon. Additionally, Trout, Cod, and Anchovy are also very healthy fish.

When Should Seasonal Fish Be Eaten?

For which fish should be eaten according to the seasons, this list will help you. To find out when fish are at their most delicious and beneficial, take a look at the list below. Fish to be eaten according to the seasons:
JANUARY – Anchovy, Grey Mullet, Red Mullet, Bluefish, and Swallow FEBRUARY – Turbot, Smelt, Sea bream, Mullet, Silverfish, Grey Mullet, and Red Mullet MARCH – Grey Mullet, Sea bass, Whiting, Catfish, Rockfish, and Turbot APRIL – Swordfish, Mullet, Sea bass, Silverfish, Red Mullet, and Grey Mullet MAY – Silverfish, Whiting, Mullet, Sea bass, Grouper, and Rockfish JUNE – Mullet, Tuna, Grouper, Sardine, Rockfish, Bonito, and Parrotfish JULY – Sardine and Horse Mackerel (Mackerel) AUGUST – Bonito, Sardine, Dentex, and Grouper SEPTEMBER – Swordfish, Horse Mackerel, Sardine, and Smelt OCTOBER – Bluefish, Horse Mackerel, Red Mullet, and Red Mullet NOVEMBER – Mackerel, Sea bream, Bluefish, Anchovy, and Catfish DECEMBER – Anchovy, Bonito, Sea bream, Bluefish, Red Mullet, and Mackerel