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Gulf toadfish (Opsanus beta) — Batrachoididae

Gulf toadfish

Opsanus beta
LC · Least Concern
NativeIntroduced

The Gulf toadfish (Opsanus beta) is a saltwater fish of the family Batrachoididae that grows up to 33 cm.

Length
33 cm
Water
Saltwater
Diet
Carnivore
Behaviour
Solitary
Activity
Nocturnal
Body shape
Torpedo-shaped
Substrate
Sand / mud bottom
Danger
Venomous / poisonous
Range
Seagrass beds and coastal bays of the western Atlantic.
Edibility
Rarely eaten

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Description

The Gulf toadfish (Opsanus beta) is a stocky bottom fish of the family Batrachoididae from the western Atlantic. The species has a broad, flattened head with skin flaps, a large mouth and a brownish, mottled body, and reaches about 33 cm. It is common in seagrass beds, rocky cuts and shallows of coastal bays and lagoons. As an ambush predator it feeds on crustaceans, mollusks and small fishes. Nesting males make grunting calls to attract females. The fin spines can cause painful puncture wounds. The species is widely used in scientific research owing to its hardiness.

Frequently asked questions

How do you recognise the Gulf toadfish?

The Gulf toadfish has a torpedo-shaped body, is mainly brown and shows a marbled pattern. Broad head with skin flaps; nest-guarding males make humming calls; widely used research fish. Note: in tropical areas this species can cause ciguatera poisoning when eaten; large specimens of coral reef predators can accumulate the toxin. Eat with caution or avoid in risk areas.

Where does the Gulf toadfish live?

The Gulf toadfish lives in the sea (marine waters) and is mostly found around sand or mud bottom. Seagrass beds and coastal bays of the western Atlantic.

How big does the Gulf toadfish get?

The Gulf toadfish grows to a maximum of about 33 cm.

Is the Gulf toadfish dangerous to humans?

The Gulf toadfish is venomous — handle spines with care and seek medical help after a sting if needed. The fin spines can cause painful puncture wounds. Clean and disinfect the wound thoroughly; seek medical help in case of severe pain, swelling or infection.

Is the Gulf toadfish edible?

The Gulf toadfish is rarely eaten.

More photos

Gulf toadfish (Opsanus beta) — Batrachoididae — 2
iNaturalist ((c) John Aufderheide, some rights reserved (CC BY-NC))
Gulf toadfish (Opsanus beta) — Batrachoididae — 3
Nick Tobler (Cowturtle) (CC BY 4.0) via GBIF — iNaturalist
Gulf toadfish (Opsanus beta) — Batrachoididae — 4
iNaturalist ((c) Squidpastry, some rights reserved (CC BY-NC))
Gulf toadfish (Opsanus beta) — Batrachoididae — 5
Wikimedia Commons — Austin Smith (CC BY 4.0)
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All data

Identification

English name
Gulf toadfish verified
Scientific name
Opsanus beta
Family
Batrachoididae
Other names
Gulf Toadfish; Gulf toadfish verified

Appearance

Size class
Medium verified
Max length (cm)
33.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Brown inferred
Pattern
Marbled inferred
Tail shape
Rounded inferred
Mouth position
Terminal inferred
Lips
Thick / fleshy inferred
Barbels
No sourced
Dorsal fins
Two separate inferred
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Saltwater sourced
Substrate
Sand / mud bottom sourced
Natural range
Seagrass beds and coastal bays of the western Atlantic. inferred
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Crustaceans, molluscs and small fishes sourced
Social behaviour
Solitary inferred
Territorial
No inferred
Activity
Nocturnal inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Broad head with skin flaps; nest-guarding males make humming calls; widely used research fish. Note: in tropical areas this species can cause ciguatera poisoning when eaten; large specimens of coral reef predators can accumulate the toxin. Eat with caution or avoid in risk areas. verified

For anglers

Edibility
Rarely eaten sourced
Fishing method
Bottom fishing with natural bait (worm, shrimp or fish) on or just above the seabed. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Venomous / poisonous sourced
First aid
The fin spines can cause painful puncture wounds. Clean and disinfect the wound thoroughly; seek medical help in case of severe pain, swelling or infection. sourced

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Opsanus

More from the family Batrachoididae

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