Rákfajtával

Rákfajtával is a Hungarian term that translates to "crayfish species" or "crab species" depending on the context. In a biological sense, it refers to any distinct type of crustacean belonging to the infraorder Astacidea (crayfish) or Brachyura (true crabs). These are decapod crustaceans, meaning they possess ten limbs, typically including a pair of chelipeds (claws).

Crayfish are primarily freshwater inhabitants, found in rivers, lakes, and streams across many continents. They are often characterized by their elongated bodies, powerful claws, and segmented tails. Different rákfajtával species exhibit variations in size, color, and habitat preference. Some are commercially important for food, while others play a vital role in their aquatic ecosystems as scavengers or prey.

Crabs, on the other hand, are predominantly marine, though some species are found in brackish water or even freshwater environments. They are distinguished by their broad, flattened carapaces and their habit of walking sideways. Like crayfish, various crab rákfajtával are significant in both ecological and economic terms, serving as food sources and contributing to marine biodiversity. The study of rákfajtával falls under the broader field of carcinology, a subdiscipline of zoology focused on crustaceans.