Lagoon boy From Young Justice Legacy
About the character:
Lagoon Boy (real name La'gaan) is the protégé of Aquaman, and a member of the Team. He is a former classmate of Kaldur'ahm at the Conservatory of Sorcery.
Lagoon Boy is a male Atlantean with amphibious adaptations. He has green skin, red eyes and webbed ears, claws and feet. He has dark green fins on his head, the ends of which he has tied on a pony tail. He wears black shorts, and a black pouch around his ankle.
PS:in My Opnion he´s is way better than Aqualad (Kaldur'ahm).