We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What is a Threadfin?

By Alex Terris
Updated Jun 04, 2024
Our promise to you
All Things Nature is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At All Things Nature, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject-matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

A threadfin is a type of fish that primarily lives in shallow waters and is found in regions with a range of salt concentrations. The fish typically grow to between 8 inches (20 cm) and 80 inches (200 cm) in length and have a grey color. There are a number of species of the Polynemidae family which are called threadfins, so there is some variation in size and color. The fish’s distinguishing feature is its pectoral fins, which are split into two separate parts.

Threadfin fish are usually found in subtropical oceans. The fish’s ability to survive in water with a range of different salt concentrations means that it is also found in rivers and lakes. They usually live in shallow waters with sand or mud bottoms.The threadfin is able to find prey in the sand or mud using its split pectoral fin.

Typically, threadfin fish are silvery grey in color. The length of the fish depends on the exact species. For example, the four-fingered species can grow up to 80 inches (200 cm), although not all specimens reach this size.

In total, there are around 40 species of threadfin. Some species include the Australian, Eightfinger and Persian blackspot threadfin. The giant African threadfin, as the name suggests, is one of the largest species, and can live in both fresh and salt water. The Atlantic species is much smaller and typically grows to around 9 inches (23 cm) in length.

The species usually eats other small fish. Many species will also consume crustaceans. There is some variety in diet between species, however. For example, the King threadfin lives mainly off prawns and other fish.

Unlike most other fish, their pectoral fins are split into two parts. Pectoral fins are small and located on both sides of the fish. The bottom section of the fins are split further into long, thin rays, which is where the fish get their name. These rays can often be long enough to pass behind their tail and, as noted, are thought to be used by threadfins to find food among sand and other types of sediment.

The fish are known to form large schools. This means that they are popular targets for commercial fishermen, as it is easy to catch them in large numbers. Threadfins are used as food for other fish in fisheries, but certain species can be eaten by humans. The fish are also popular among anglers.

All Things Nature is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Discussion Comments
All Things Nature, in your inbox

Our latest articles, guides, and more, delivered daily.

All Things Nature, in your inbox

Our latest articles, guides, and more, delivered daily.