Hollow holes provide security and viewing access for small fishes and shrimp, enriching their environment without crowding the tank. Fishes Tunnel Toy for small fishes and shrimp to entertain, breed, or hide in aquariums, offering enrichment and shelter in a compact tunnel form. Decoration accessory for fish tanks, suitable for small fishes and shrimp, designed to stay from decay and algae troubles to help maintain a cleaner tank appearance. When combined with plant decorations, it creates a natural look in your water tank and integrates smoothly with a planted setup. Compatibility: Suitable for small fishes and shrimp in typical home aquariums; fits well with plant decorations and other decor. Size: Not specified by the manufacturer. Material: Not specified by the manufacturer. Performance: Provides hiding spots, enrichment, and visual interest to support natural behavior in small fish and shrimp communities. Use scenario 1: Place in a nano or small community tank to give tiny fish and shrimp a secure hiding place and a curiosityappealing tunnel they can explore. Use scenario 2: Use in a breeding or nursery tank to offer a safe area for fry to retreat while parents guard nearby. Use scenario 3: Pair with live plants in a planted tank to enhance a natural ecosystem look and improve overall tank aesthetics.