Aquarium Community College

Pencilfish (genus Nannostomus) are elegant South American freshwater fish known for their slender bodies, peaceful nature, and unique surface-oriented behavior. This comprehensive guide explores pencilfish biology, natural habitats, and expert care tips for planted aquariums.

Tetra fish are among the most popular freshwater aquarium fish thanks to their vibrant colors, peaceful nature, and mesmerizing schooling behavior. This in-depth guide explores tetra evolution, natural habitats, behavior, and expert tips for successful tetra care in aquariums.