The Penguin Tetra (Thayeria boehlkei), also known as the Hockey Stick Tetra or Blackline Tetra, is a peaceful and uniquely patterned freshwater fish. Its distinctive appearance and calm temperament make it a popular choice for community aquariums. General Appearance: • Body Shape: Slender, elongated body with a slightly compressed profile. • Coloration: • Silvery-white body with a striking black stripe that runs from the middle of the body down through the lower lobe of the tail, resembling a ho