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Emerald Parrotfish (Nicholsina usta) — Scaridae

Emerald Parrotfish

Nicholsina usta
Family: Scaridae
LC · Least Concern

The Emerald Parrotfish (Nicholsina usta) is a saltwater fish of the family Scaridae that grows up to 30 cm.

Length
30 cm
Water
Saltwater
Depth
1.0–80.0 m
Diet
Herbivore
Behaviour
Solitary
Activity
Diurnal
Body shape
Torpedo-shaped
Substrate
Stone or rock
Danger
Harmless
Range
Western Atlantic, in seagrass beds and open bottoms, mainly in shallow water; larger animals in deeper water.
Edibility
Rarely eaten

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Description

The emerald parrotfish is a parrotfish (family Scaridae) of the western Atlantic. The species reaches about 30 cm and has a fusiform, greenish body with brown and reddish tones and a beak-like dentition of fused teeth. It inhabits seagrass beds and open bottoms, mainly in shallow water; larger fish live in deeper water. With its beak it crops and scrapes seagrass and algae. Unlike many parrotfishes it is not commonly marketed. The species is of modest local value and is harmless to humans.

Frequently asked questions

How do you recognise the Emerald Parrotfish?

The Emerald Parrotfish has a torpedo-shaped body, is mainly green and shows a plain pattern. Parrotfish with a beak-like dentition with which it clips off seagrass and algae.

Where does the Emerald Parrotfish live?

The Emerald Parrotfish lives in the sea (marine waters) and is mostly found around stony or rocky ground. Western Atlantic, in seagrass beds and open bottoms, mainly in shallow water; larger animals in deeper water.

How big does the Emerald Parrotfish get?

The Emerald Parrotfish grows to a maximum of about 30 cm. On average the species is around 18 cm.

Is the Emerald Parrotfish dangerous to humans?

No, the Emerald Parrotfish is harmless to humans. None required: this species is harmless to humans.

Is the Emerald Parrotfish edible?

The Emerald Parrotfish is rarely eaten.

More photos

Emerald Parrotfish (Nicholsina usta) — Scaridae — 2
iNaturalist ((c) shawnphoenix, some rights reserved (CC BY-NC))
Emerald Parrotfish (Nicholsina usta) — Scaridae — 3
Florida Museum of Natural History Ichthyology (CC BY-NC 4.0) via GBIF — UF
Emerald Parrotfish (Nicholsina usta) — Scaridae — 4
iNaturalist ((c) kennedyhanson, some rights reserved (CC BY-NC))
Emerald Parrotfish (Nicholsina usta) — Scaridae — 5
iNaturalist ((c) Squidpastry, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Emerald Parrotfish verified
Scientific name
Nicholsina usta
Family
Scaridae
Other names
Emerald parrotfish verified

Appearance

Size class
Medium verified
Max length (cm)
30.0 verified
Average length (cm)
18.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Green inferred
Pattern
Plain inferred
Tail shape
Straight inferred
Mouth position
Terminal inferred
Lips
Thick / fleshy 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)
1.0 verified
Max depth (m)
80.0 verified
Natural range
Western Atlantic, in seagrass beds and open bottoms, mainly in shallow water; larger animals in deeper water. inferred
Origin
Native sourced

Behaviour & biology

Diet
Herbivore sourced
Diet (detail)
Seagrass and algae sourced
Social behaviour
Solitary inferred
Territorial
No inferred
Activity
Diurnal inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Parrotfish with a beak-like dentition with which it clips off seagrass and algae. sourced

For anglers

Edibility
Rarely eaten sourced
Fishing method
Fishing with natural bait (fish, shrimp, worm) or lures close to reef and rock structures. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced
First aid
None required: this species is harmless to humans. sourced

Status & sources

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

Same genus Nicholsina

More from the family Scaridae

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