👉 Leuctra is a genus of marine fish in the order Cichlidae, which includes a wide variety of species that are known for their unique characteristics and ability to swim through water at speeds up to 150 km/h. Some common traits include elongated body shapes, streamlined fins, and a distinctive pattern on their head and fins that resembles a leucogram, or the Greek word for "pear," indicating they have a pear-shaped body.