Red-lipped batfish: A walking fish with bright red lips from the Galápagos.

The red-lipped batfish is a bottom-dwelling anglerfish found near the Galápagos Islands. It uses modified fins to walk on the seabed and lures prey with a light-emitting spine. Males guard the eggs after mating.

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Uses fins to walk on the ocean floor
Has bright fluorescent red lips
Males guard the eggs after spawning
Lures prey with a light-emitting spine
Found only around the Galápagos Islands

What it is

This unusual fish belongs to the anglerfish order. It has a flattened body with light brown and grey tones on its back and white underneath. A dark stripe runs from head to tail. Its most striking feature is a pair of bright red lips. The skin feels smooth but is covered in tiny spines. Large eyes sit high on the head, giving it a wide view while it stays hidden on the sand.

Where it lives

It lives in the Pacific Ocean waters surrounding the Galápagos Islands off Ecuador. The type location is Tagus Cove on Isabela Island. These fish dwell on the seabed at depths between three and seventy-six metres. They prefer sandy areas or the edges of reefs. Although they stay near the bottom, they can occasionally be found closer to the surface over deep water.

How it lives

Active mainly at night, it hunts small fish and invertebrates like crabs and shrimp. It does not swim well. Instead, it uses its pectoral, pelvic, and anal fins to walk along the ocean floor. This movement resembles a frog’s gait. It ambushes prey by sucking them into its mouth. A spine on its head emits light to lure victims in darker waters. It can change colour to blend with rocks or sand.

Breeding and life cycle

Males perform a courtship dance, swaying their bodies to attract females. After mating, the female lays sticky eggs that attach to the ocean floor. The male then guards the clutch. He fans the eggs with his fins to keep oxygen flowing and protects them from predators until they hatch. Small groups also use body movements to communicate territory or intent.

A drawing made by EveryFish from what this page says. It is a diagram, not a picture of the real fish.

Fish and people

There is no commercial fishing for this species. It is not kept in home aquariums due to its specific deep-water needs. Its name honours Charles Darwin, marking the centenary of his work on evolution. The fish is a symbol of the unique biodiversity found in the Galápagos marine reserve.

Status and threats

No direct threats are currently recorded. However, rising sea temperatures and coral bleaching may damage its habitat. As a bottom dweller, it risks ingesting microplastics or getting caught in discarded fishing gear. Conservation efforts focusing on plastic pollution in the Galápagos help protect its environment.

Questions people ask about Red-lipped batfish

Why does it have red lips?

Scientists believe the bright red colour helps individuals recognise each other during spawning. It distinguishes this species from other similar batfish in the region.

How does it move if it cannot swim well?

It uses its adapted pectoral, pelvic, and anal fins to walk along the seabed. This limb-like movement allows it to navigate sandy and rocky substrates effectively.

What does the red-lipped batfish eat?

It feeds on small fish and invertebrates such as shrimp, crabs, worms, and mollusks. It uses suction to pull prey into its mouth while resting on the ocean floor.

Good reading and sources

Where this page comes from

The facts on this page come from the Wikipedia article "Red-lipped batfish", written by its contributors and used under the CC BY-SA 4.0 licence, and from its Wikidata record (CC0). EveryFish rewrote the text in its own words, with AI assistance, and compares every page with the article to make sure no passage is copied. It may be reused under the same CC BY-SA 4.0 licence with a link back.

It may contain mistakes, and figures change over time. Nothing here is investment or buying advice. If something is wrong, tell us. Last refreshed 2026-11-15.

Red-lipped batfish