How fish hear
Explainer · Last reviewed 2026-08-10
Fish hear well, sense pressure waves through otoliths and swim bladders, and sound travels far faster and further in water than in air — which makes hull noise a real variable and footsteps a smaller one.
Fish hear, and some hear extremely well. The apparatus is unfamiliar rather than absent: dense otoliths in the inner ear move differently from the surrounding tissue when a sound wave passes, and that relative movement is the signal.
Some groups do much better than that. Cyprinids and catfish have a chain of small bones — the Weberian apparatus — connecting the swim bladder to the inner ear, so the bladder acts as an amplifier. These are the hearing specialists, and their sensitivity and frequency range substantially exceed those of most other fish.
Sound behaves differently in water: it travels roughly four and a half times faster than in air and attenuates far less, so underwater noise carries a long way. Sound crossing from air to water, however, mostly reflects at the surface rather than entering it.
Which noises actually reach fish
That air-water reflection is the key practical point, and it separates the noises anglers worry about from the ones that matter.
Talking on the bank produces airborne sound that largely bounces off the surface. Noise transmitted through the ground or the boat, however, enters the water directly and efficiently: footsteps on a wooden staging, a dropped item on the bottom of a boat, an anchor chain, an outboard, or a rod butt knocked against a hull.
The distinction is between airborne sound and substrate-borne or hull-borne sound, and it explains an apparent contradiction in angling folklore — the anglers who insist on silence and the ones who talk loudly and still catch may both be right about their own situations.
Commercial and industrial noise is a genuine conservation subject as well, with evidence that shipping and construction noise affects fish behaviour and physiology.
Scientific evidence
Supported by peer-reviewed research or fisheries science. The sources are listed and can be checked.
- Freshwater Fishes of the British Isles — HarperCollins (New Naturalist 75), 1992 (Reference work)Relied on for: Descriptions of the Weberian apparatus and hearing in cyprinids and catfishes.States this directlyCitation checked — the work exists and is described correctly
- Cefas science, advice and data on marine and freshwater environments — Centre for Environment, Fisheries and Aquaculture Science (Government fisheries body)Relied on for: Scientific material on underwater noise and its effects on fish.States this directlyCitation checked — the work exists and is described correctly
What follows for fishing
Be quiet in the boat rather than on the bank. Avoid banging, dropping things and dragging anchors, and treat a hull as a loudspeaker.
On stagings, platforms and hard banks, footfall transmits into the water and is worth moderating in shallow, clear or heavily-fished venues.
Some methods use sound deliberately — rattling lures, vibrating jigs, and traditional methods that tap or slap the water — and the mechanism there is genuine, though which frequencies attract rather than deter is not well established and is a practitioner claim rather than a finding.
What this does not license is confidence about specific lure rattle frequencies. The hearing is real; the tuning claims are marketing.
Practitioner consensus
Widely and independently recommended by experienced anglers and specialist sources. This is real angling knowledge, not proof: controlled evidence for it is limited, and FishingHQ records it as convention rather than as a demonstrated effect.
- General angling website restatements of established technique — Various (Credible secondary source)Relied on for: Widely restated practitioner accounts of noise discipline in boats and on hard banks.States this directlyCitation checked — the work exists and is described correctly
- Sea Angler — Bauer Media (Specialist angling publication)Relied on for: Practitioner treatment of noise and disturbance in boat fishing.States this directlyCitation checked — the work exists and is described correctly
Where to go next
Fish this applies to
What these connections rest on (1)
Practitioner consensus — 1 connection
Widely and independently recommended by experienced anglers and specialist sources. This is real angling knowledge, not proof: controlled evidence for it is limited, and FishingHQ records it as convention rather than as a demonstrated effect.
Grey gurnard
A record joined to the mechanism that explains it, which is what makes a species page transferable rather than a list of facts.
- Sea Angler — Bauer Media (Specialist angling publication)Relied on for: Contemporary UK and European sea angling practice as reported by practitioners, including ground, seasonal timing, bait and method convention.States this directlyCitation checked — the work exists and is described correctly
- General angling website restatements of established technique — Various (Credible secondary source)Relied on for: Widely restated descriptions of species behaviour and regional angling practice, recorded as consensus rather than as scholarship.Background and mechanism onlyCitation checked — the work exists and is described correctly
Where it matters
- Drift fishingHull-borne noise enters the water efficiently where airborne noise does not.
- Lure fishingRattling and vibrating lures work on a real sensory mechanism.
What these connections rest on (2)
Scientific evidence — 2 connections
Supported by peer-reviewed research or fisheries science. The sources are listed and can be checked.
Drift fishing
Hull-borne noise enters the water efficiently where airborne noise does not.
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Species and habitat data underlying this connection. Hull-borne noise enters the water efficiently where airborne noise does not.States this directlyPassage read and verified
Lure fishing
Rattling and vibrating lures work on a real sensory mechanism.
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Species and habitat data underlying this connection. Rattling and vibrating lures work on a real sensory mechanism.States this directlyPassage read and verified
Related reading
- How fish detect preyHearing is a component of prey detection, particularly in turbid water.
- Rattles, vibration and the lateral lineHearing is the sense that operates at the ranges anglers usually attribute to a rattle, and it varies far more between families than the lateral line does.
What these connections rest on (2)
Scientific evidence — 2 connections
Supported by peer-reviewed research or fisheries science. The sources are listed and can be checked.
How fish detect prey
Hearing is a component of prey detection, particularly in turbid water.
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Species and habitat data underlying this connection. Hearing is a component of prey detection, particularly in turbid water.States this directlyPassage read and verified
Rattles, vibration and the lateral line
Hearing and lateral line sensing are distinct systems with different ranges, which is the core of this record.
- Lateral line system of fish — Integrative Zoology 4:13–25, 2009 (Scientific literature)Relied on for: The distinction between the lateral line and the auditory system in fish sensing.States this directlyCitation checked — the work exists and is described correctly
Sources for this page
- Freshwater Fishes of the British Isles — HarperCollins (New Naturalist 75), 1992 (Reference work)Relied on for: Descriptions of the Weberian apparatus and hearing in cyprinids and catfishes.States this directlyCitation checked — the work exists and is described correctly
How FishingHQ labels evidence is explained in the evidence policy.