The perch is one of the most well-known fish on the planet, easily recognized by almost everyone. This is not surprising, as there is a lot of information about it. These facts will help enhance your knowledge of the perch.
Variety of Species
The perch order is the most numerous, with 11,255 species. Many of them are widely used in commercial fishing.
Are Perch Sea or River Dwellers?
Perch can live in both freshwater and saltwater environments and are found almost everywhere, with the exception of Antarctica’s coasts.
Distribution
Originally, river perch were only found in Eurasia. On other continents, these fish were introduced by humans.
Diet
Perch are predatory fish. They feed on worms, crustaceans, small fish, and fish eggs. Members of the perch order spend much of their lives in search of food.
Venom
Marine perch are venomous. Their venom is located in special glands on their fins. While not deadly to humans, prompt treatment of the wound is essential.
Bioluminescence
Deep-sea marine perch have bioluminescent organs that help them attract prey. The glowing effect is produced by bacteria that live in symbiosis with the perch.
Sensitivity to Oxygen
These fish are highly sensitive to oxygen deprivation. In shallow bodies of water during winter, perch can die from a lack of oxygen. In areas where these predators are bred, humans break the ice to prevent mass die-offs.
Pacific Ocean Perch
The longest-living perch is the Pacific Ocean perch. A record for this species shows that its lifespan can reach up to 205 years.
Indian Ocean Small-eyed Grouper
The largest perch is the Indian Ocean small-eyed grouper, which can grow up to 3 meters in length and weigh around 400 kg.