"Ichthyas (Greek: \u1F38\u03C7\u03B8\u03CD\u03B1\u03C2; fl. 4th-century BCE), the son of Metallus, was a Greek philosopher and a disciple and successor of Euclid of Megara in the Megarian school. He was a colleague of Thrasymachus of Corinth in the school."@en .