Threadfin Fish

Silvery grey perciform fish belonging to the Polynemidae family are called threadfins. The eight genera and roughly forty species that make up the threadfin family are found in tropical to subtropical waters worldwide. The Indian threadfish is actually a separate species called Alectis indicus, which is occasionally referred to as threadfin.

Any of the approximately 41 species of marine fish belonging to the Polynemidae family (order Perciformes) that are commonly found on sandy beaches and warm seashores are known as threadfins.

 Threadfins are typically silvery in color, with two well-separated dorsal fins and a forked tail. Their pectoral fins, which are separated into an upper, regularly formed fin and a lower part with four to seven long, thread-like rays that act as sensory organs—especially lengthy in the young—are what give them their name. One species, Eleutheronema tetradactylum of India, can reach to 1.8 meters (6 feet) in length, but the majority of threadfins are just 30 to 60 centimeters (1 to 2 feet) long.

Although they have long, filamentous fin rays on their dorsal and anal fins instead of their pectoral fins, the worldwide, warm-water marine fishes of the genus Alectis (family Carangidae) are also known by the term threadfin, or threadfish. Additionally, these rays are more noticeable in younger people.


Cooked in a multitude of ways, threadfin salmons make for delicious meals. Depending on the size and kind, their solid flesh and large flakes make them perfect for grilling or barbecuing as steaks, cutlets, or fillets. To improve presentation, the flakes can also be properly separated after grilling.

According to Lai, threadfin is one of the most costly fish in Hong Kong, with the best varieties selling for as much as HK$500 (US$64) per kilogram. Because of their erratic behavior, it’s uncommon to find them living in the markets. It’s high quality and a delight. It always sells out, even in the market.

What advantages do Indian threadfin fish offer?

In addition to having a high concentration of omega-3 fatty acids, it also has good levels of biocin, niacin, vitamin B6, potassium, iron, and phosphorus.

Because threadfin fish is thought to have high nutrient content, which increases the supply for breastfeeding and is beneficial for the child’s brain development, it is popular among mothers and babies. For your convenience, the fillets are individually wrapped for storage. By making a lengthwise cut down one side of the fish parallel to the backbone, the fillet has been sliced or cut away from the bone. The fish should have all scales removed before filleting.

Threadfin, as many locals are aware, is a popular fish used in baby foods due to its few bones. It is low in mercury so it is a safe option for children to consume.


Identifying characteristics of threadfin fish are their long, filamentous fin rays that radiate from their dorsal fins and their elongated bodies. The fish’s name comes from these extensions that resemble threads. Their scales frequently have a pinkish or silvery tint.

Habitat: Shallow coastal waters, estuaries, and lagoons are the usual habitats for threadfin fish. They frequently gather in schools and favor environments with muddy or sandy bottoms.

Species: Threadfin fish come in a variety of species, such as the blue-spotted threadfin, African threadfin, and Indian threadfin.

Diet: Small fish, crabs, and other aquatic invertebrates are the main sources of food for carnivorous threadfin fish.

Fishing and aquaculture: Commercial and recreational fishermen frequently target threadfin fish. A variety of techniques are used to catch them, such as hook and line, gill nets, and seine nets. In certain areas, aquaculture is utilized for raising them in order to fulfill the demand for their meat.

Applications in Cooking: Threadfin fish is prized for its delicate, mildly flavored meat in many Asian culinary traditions. There are several methods for preparing it, such as grilling, baking, steaming, or frying. Recipes like stir-fries, soups, and curries frequently call for threadfin.

Nutritional Value: Omega-3 fatty acids, which are good for heart health, and lean protein are two important nutrients found in threadfin fish. They are low saturated and can be part of a healthy diet.

Conservation Status: Although there are differences in the conservation status of threadfin fish species, overfishing and habitat degradation are problems for certain populations. In order to maintain the viability of these fish populations, management and conservation initiatives have been made.


It’s crucial to remember that based on the species and the area in which they are found, threadfin fish may have different specialized traits and culinary applications. To support sustainable fishing methods, make sure you abide by local laws and ordinances if you intend to cook or eat threadfin fish.

Known by their common name, threadfins, threadfin fish are a family of marine and estuary fish species found in tropical and subtropical seas of the western Pacific, western Atlantic, and Indian oceans. They are members of the Polynemidae family. These fish are highly regarded for their delicate, soft flesh and are widely used in Asian cuisines.

Scroll to Top