What Is The Oldest Species Of Fish?


Hello, Sobat Penurut! Have you ever wondered what the oldest species of fish is? Well, you’re in luck because in this article, we’ll be diving deep into the history of fish and exploring the elusive title of “oldest species.” By the end of this article, you’ll have a better understanding of the fascinating world of fish and how they have evolved over millions of years.

The Evolution of Fish

Fish are one of the oldest vertebrate groups on Earth, dating back over 500 million years. They evolved from simple, jawless creatures into a diverse array of species that inhabit virtually every aquatic environment on the planet.

During the early stages of fish evolution, they were predominantly found in the oceans, but as they evolved, they began to colonize freshwater environments such as rivers and lakes. Today, fish are one of the most diverse and successful groups of animals on Earth, with over 32,000 known species.

What is the Oldest Species of Fish?

Before we dive into the answer, it’s essential to understand how scientists determine the age of a species. Paleontologists use fossil evidence to estimate the age of a species by studying the rock layers in which the fossils are found. By analyzing the fossils’ morphology and their position in the rock layers, scientists can determine the approximate age of the species.

Based on the fossil evidence, the oldest known species of fish is the “Lamprey,” which dates back over 360 million years. Lampreys are a type of jawless fish that have a distinct appearance and behavior. They are parasitic fish that latch onto other fish to feed on their blood and bodily fluids.

Other Ancient Fish Species

While the Lamprey is the oldest known species of fish, there are several other ancient fish species that have been discovered through fossil evidence. One of these is the Coelacanth, which dates back over 400 million years. The Coelacanth was thought to be extinct until it was rediscovered in 1938 off the coast of South Africa.

The Sturgeon is another ancient fish species that has been around for over 200 million years. Sturgeons are known for their caviar, which is a prized delicacy around the world. They are also important commercially as a source of meat and leather.

The Importance of Fish in Our Ecosystem

Fish are an essential part of the world’s ecosystem, playing a crucial role in maintaining the balance and health of aquatic environments. They are an important food source for humans and other animals, and they help keep the oceans and freshwater environments clean by consuming dead plants and animals.

Fish also play a critical role in nutrient cycling, as they excrete nutrients that are essential for the growth of phytoplankton and other aquatic organisms. Without fish, the aquatic ecosystem would be severely disrupted, leading to a chain reaction of negative impacts on the environment.

The Threats Facing Fish Today

Despite their importance, fish face numerous threats today, including overfishing, habitat destruction, pollution, and climate change. Overfishing has led to the depletion of fish populations around the world, while habitat destruction has reduced their available habitat.

Pollution and climate change also pose significant threats to fish populations, as they can cause changes in water temperature, acidity, and oxygen levels, all of which can have negative impacts on fish health and survival.


1. What is the lifespan of a Lamprey fish?

The lifespan of a Lamprey fish is between 3-7 years.

2. What do Lamprey fish eat?

Lamprey fish are parasitic and feed on the blood and bodily fluids of other fish and mammals.

3. Are Coelacanths still alive today?

Yes, Coelacanths are still alive today, but they are considered a rare and endangered species.

4. What do Sturgeon fish eat?

Sturgeon fish are omnivores, and their diet includes insects, mollusks, and small fish.

5. How many fish species are there in the world?

There are over 32,000 known species of fish in the world.

6. What is the biggest fish in the world?

The biggest fish in the world is the Whale Shark, which can grow up to 40 feet in length.

7. What is the smallest fish in the world?

The smallest fish in the world is the Paedocypris fish, which is only 7.9mm long.

8. Why are fish important to the environment?

Fish are important to the environment because they help maintain the balance and health of aquatic ecosystems.

9. How do humans impact fish populations?

Humans impact fish populations through overfishing, habitat destruction, pollution, and climate change.

10. What is the most commonly consumed fish in the world?

The most commonly consumed fish in the world is the Herring.

11. What is the most expensive fish in the world?

The most expensive fish in the world is the Bluefin Tuna, which can fetch prices of over $1 million per fish.

12. How do fish breathe?

Fish breathe through their gills, which extract oxygen from the water.

13. What is the purpose of fish scales?

Fish scales provide protection and help reduce drag as fish swim through the water.


Nah, Sobat Penurut, now you know that the Lamprey is the oldest species of fish and that fish have been around for over 500 million years. While they face numerous threats today, they remain a critical part of the world’s ecosystem, and their importance cannot be overstated. We must work to protect and preserve fish populations for future generations, and we can start by reducing overfishing, protecting their habitats, and reducing pollution and carbon emissions.

So, let’s do our part in keeping our oceans and freshwater environments healthy and thriving for all the fish species that call them home.


Mimin hopes that this article has been informative and enjoyable to read. The information provided in this article is for educational and informational purposes only and should not be considered professional advice. Mimin is not responsible for any actions taken based on the information provided in this article. Please consult with a professional if you have any questions or concerns about fish or their habitats.

Species Age
Lamprey Over 360 million years
Coelacanth Over 400 million years
Sturgeon Over 200 million years