Community Tank

Community tank success requires understanding ecological guilds and niche partitioning: combine top-dwelling (hatchetfish, killifish), mid-water (tetras, rasboras), and bottom-dwelling (corydoras, loaches) species to minimize competition. Size compatibility is critical — any fish small enough to fit in another's mouth eventually will. Temperament matching means avoiding known fin-nippers (tiger barbs, serpae tetras) with slow, long-finned species (angelfish, bettas). Water parameter overlap should be researched; many commercially sold fish tolerate a wide range but thrive only at specific values. Providing species-appropriate structure (floating plants for surface dwellers, caves for bottom species) reduces aggression and creates a more naturalistic environment.