endangered fish species

Threadfin rainbowfish in breeding condition is a spectacular sight. Healthy and well-bread adults display many different intense colors. Meinkin described them, also called Featherfin Rainbowfish, in 1974. They are found around Indonesia, New Guinea and Northern Australia. They are not endangered fish species.

Description

This aquarium fish is tiny and streamlined. The male’s basic body color is silver but colors vary based on health, diet and environment conditions and have a longer fin and display more intense colors than females. Females are a rich honey color with green tints and translucent fins. The fish grow up to 2 inches (5cm).

Behavior

Tags: aquarium fish, endangered fish species, Facts about Threadfin Rainbowfish, Threadfin rainbowfish

The STURGEON (Acipenser brevirostrum) inhabits the main parts of the river and estuaries, in all depths. Adult sturgeons weigh up to an average of 8 pounds and grow up to 36 to 38 inches. The life expectancy of a sturgeon is usually 20 years but specimens have been found to live up to 50 and even 75 years old. It feeds mainly on insects, mollusks and crustaceans.

Sturgeon Description

Sturgeons have a primitive look, with a unique heterocercal tail where the upper part of the tail fin is longer than the lower part. Its body is covered by 5 rows of hard, bony scales. They have a tube-like mouth that can be found under the bony, elongated snout. The mouth protrudes several inches while the fish feeds on the bottom of the river. Their color is from gray-olive to brown on the top part and white on the underbelly.

Tags: endangered fish species, Facts about Sturgeon, freshwater fish, Sturgeon, Sturgeon Description, Sturgeon Facts, sturgeon facts for kids

The Arapaima (Arapaima gigas), commonly called Piracucu, are beautiful, tropical fish native to the Amazon River that grow to a huge length of 15 feet. The Arapaima is considered to be an endangered fish species because these fish are hunted as food all throughout the Amazon. In this article, you’ll find fascinating facts about tropical fish Arapaima.

Facts about Arapaima Behavior and Habitat

These fish inhabit swampy waters with low oxygen concentrations. Because of this environment, the fish has developed a unique breathing system. It has a lung-like lining inside its throat which enables the fish to take in gulps of air from the surface. The air ‘breathed’ in acts as a necessary supplementary source of oxygen for the fish. Unfortunately, this behavior of gulping in air makes the Arapaima very vulnerable to fishermen. The gulp can be heard and the fishermen follow the sound towards the fish. The fish is then speared or caught with large nets.

Tags: Arapaima Facts, endangered fish species, Facts about Arapaima, fascinating facts about tropical fish, Tropical fish