Aquarium L-Shape Tunnel Hideout — Habitat Enrichment for Small Fish

Bottom-dwelling and shy fish need cover at substrate level, not just open water. Without a low hiding spot, these fish stay tense and rarely venture out.

This is Habitat enrichment: an L-shaped tunnel hideout that sits low in the tank, giving your fish a sheltered passage to slip through and tuck into. A tunnel lets fish express their instinct to shelter and explore enclosed spaces, which supports calmer, more confident behavior for shy and bottom-dwelling species. EnrichCove curates aquarium habitat to a science-backed standard, so your fish can thrive with cover where they actually use it.

• L-shaped tunnel hideout for low, substrate-level cover
• Sheltered passage for fish to slip through and rest in
• Available as a single or paired set
• Suits bettas, small bottom-dwellers, and shy community fish
• Rinse clean and reusable

A passage your fish use freely — sheltering and exploring on their own terms.

Where should I put the tunnel?

Rinse it in dechlorinated water and set it low on the substrate near where shy fish already hide, with both openings clear so fish can pass through. Make sure the tunnel is wide enough that fish won't get stuck, and watch the tank for the first day. Ask your fish supplier if you keep larger or fin-heavy species.

Give your shy fish a place to slip away. Free US shipping over $49 · 30-day returns.

Tunnel Hideout FAQ

Which fish use a tunnel hideout? Bettas, small bottom-dwellers, and shy community fish — an EnrichCove tunnel gives them low, sheltered cover where they feel most secure.

Single or pair? It's offered as a single or paired set, so you can add cover to one tank or spread it across two.

Is it safe to add? Rinse it before use and check the openings are wide enough that fish can pass through freely.