Are Black Tip Tetras Weak Fish?
Are Black Tip Tetras Weak Fish? Cardinal Tetra. Harlequin Rasbora. Dwarf Gourami. Neon Tetra. Celestial Pearl Danio. Honey Gourami. Chili Rasbora. Cory Catfish. How many black tetras should be kept together? Black skirt tetras should be kept in groups of at least 6 and will need a minimum tank size of 20 gallons (75 L).