Those are all very tuff fish you have. The only fish I can think of are Pacu or good sized Metynnis like Rubripinnis or Schomburkii. Your current stock will just make an expensive dinner out of any Tetra or Danio. The Zonatum and Fenestratum will gobble them up like pellets. Without those two species you may get away with the lesser fish. Try about a dozen small Jewel Cichlids. The new Cherry Reds look good are fast movers, stay small and are tuff. They also know how to stay out of danger by hiding. Tetra just swim around until they are caught. Good luck Monsta!
