katalyyttisista

Katalyyttisista, also known as the "Catalan Oysters," are a species of small, freshwater mussels native to the rivers and streams of the Iberian Peninsula, particularly in Spain and Portugal. They are characterized by their small size, typically measuring between 1.5 to 3 centimeters in length, and their distinctive, elongated shell shape. The shell is usually brown or reddish-brown, with a smooth surface and a slight convexity.

These mussels play a crucial role in their aquatic ecosystems. They filter feed on plankton and other small particles, contributing to water quality by removing excess nutrients and improving water clarity. They also serve as a food source for various aquatic animals, including fish and birds.

Katalyyttisista are considered a vulnerable species due to habitat loss and degradation, primarily caused by pollution, dam construction, and water abstraction. Conservation efforts are underway to protect their habitats and ensure the survival of this unique species.