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Blue rainbow (Scarus guacamaia) — Scaridae

Blue rainbow

Scarus guacamaia
Family: Scaridae
NT · Near Threatened

The Blue rainbow (Scarus guacamaia) is a saltwater fish of the family Scaridae that grows up to 120 cm.

Length
120 cm
Water
Saltwater
Depth
3.0–25.0 m
Diet
Herbivore
Behaviour
Solitary
Activity
Diurnal
Body shape
Torpedo-shaped
Substrate
Stone or rock
Danger
Venomous / poisonous
Edibility
Rarely eaten

Description

The rainbow parrotfish is the largest parrotfish of the Atlantic and can reach about 120 cm. The species has a green body with orange tints and a beak of fused teeth, with which it rasps algae from coral and rock. It inhabits coral reefs; juveniles are strongly dependent on mangroves. The fish has a fixed home cave in which it rests at night and uses the sun to relocate it. Like many parrotfishes it changes sex, from female to male. Larger individuals can carry ciguatera toxin.

Frequently asked questions

How do you recognise the Blue rainbow?

The Blue rainbow has a torpedo-shaped body, is mainly multicoloured and shows a plain pattern.

Where does the Blue rainbow live?

The Blue rainbow lives in the sea (marine waters) and is mostly found around stony or rocky ground.

How big does the Blue rainbow get?

The Blue rainbow grows to a maximum of about 120 cm. On average the species is around 70 cm.

Is the Blue rainbow dangerous to humans?

The Blue rainbow is venomous — handle spines with care and seek medical help after a sting if needed.

Is the Blue rainbow edible?

The Blue rainbow is rarely eaten.

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All data

Identification

Dutch name
Regenboog-papegaaivis sourced
English name
Blue rainbow verified
Scientific name
Scarus guacamaia
Family
Scaridae
Other names
Rainbow; Rainbow parrotfish; Rainbow Parrotfish verified

Appearance

Size class
Extra large verified
Max length (cm)
120.0 verified
Average length (cm)
70.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Multicoloured inferred
Pattern
Plain inferred
Tail shape
Straight inferred
Mouth position
Beak-shaped inferred
Lips
Thin inferred
Barbels
No sourced
Dorsal fins
One continuous inferred
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Saltwater sourced
Substrate
Stone or rock sourced
Min depth (m)
3.0 verified
Max depth (m)
25.0 verified
Origin
Native sourced

Behaviour & biology

Diet
Herbivore sourced
Social behaviour
Solitary inferred
Territorial
No inferred
Activity
Diurnal inferred
Reproduction
Protogynous (female first) sourced
Sexual dimorphism
Yes inferred

For anglers

Edibility
Rarely eaten sourced
Fishing method
Vissen met natuurlijk aas (vis, garnaal, worm) of kunstaas dicht bij rif- en rotsstructuren. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Venomous / poisonous sourced

Status & sources

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

Same genus Scarus

More from the family Scaridae

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