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Oopu Alamoo (Lentipes concolor) — Gobiidae

Oopu Alamoo

Lentipes concolor
Family: Gobiidae
LC · Least Concern

The Oopu Alamoo (Lentipes concolor) is a brackish-water fish of the family Gobiidae that grows up to 7 cm.

Length
7 cm
Water
Brackish
Depth
1.0–914.0 m
Diet
Herbivore
Behaviour
Solitary
Activity
Diurnal
Body shape
Torpedo-shaped
Substrate
Mixed bottom
Danger
Harmless
Range
Hawaii (endemic)
Edibility
Not eaten

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Description

The Hawaiian climbing goby is a goby endemic to the streams of Hawaii. The species grows to about 7 cm and has a stocky body with a ventral sucking disc formed from the fused pelvic fins. Remarkably, after a marine larval phase the young enter the river mouths and can use this disc to climb even high waterfalls to reach the upper reaches. It grazes algae and small invertebrates from stones. The fish is harmless to humans. The IUCN assesses the species as Least Concern (LC).

Frequently asked questions

How do you recognise the Oopu Alamoo?

The Oopu Alamoo has a torpedo-shaped body, is mainly brown and shows a plain pattern. Ventral sucker with which juveniles climb waterfalls; stream goby

Where does the Oopu Alamoo live?

The Oopu Alamoo lives in brackish water and is mostly found around mixed bottom. Hawaii (endemic)

How big does the Oopu Alamoo get?

The Oopu Alamoo grows to a maximum of about 7 cm.

Is the Oopu Alamoo dangerous to humans?

No, the Oopu Alamoo is harmless to humans. This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status.

Is the Oopu Alamoo edible?

The Oopu Alamoo is not usually eaten.

More photos

Oopu Alamoo (Lentipes concolor) — Gobiidae — 2
iNaturalist ((c) sophiems, some rights reserved (CC BY-NC))
Oopu Alamoo (Lentipes concolor) — Gobiidae — 3
iNaturalist ((c) Thomas Irvine, some rights reserved (CC BY))
Oopu Alamoo (Lentipes concolor) — Gobiidae — 4
iNaturalist ((c) Jack Roney, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Oopu Alamoo verified
Scientific name
Lentipes concolor
Family
Gobiidae

Appearance

Size class
Small verified
Max length (cm)
7.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Brown sourced
Pattern
Plain sourced
Tail shape
Rounded inferred
Mouth position
Inferior (downward) sourced
Lips
Thin sourced
Barbels
No sourced
Dorsal fins
Two separate sourced
Dorsal spines
No sourced

Habitat & distribution

Water type
Brackish sourced
Substrate
Mixed bottom sourced
Min depth (m)
1.0 verified
Max depth (m)
914.0 verified
Natural range
Hawaii (endemic) verified
Origin
Native verified

Behaviour & biology

Diet
Herbivore sourced
Diet (detail)
Algae and small invertebrates from stones inferred
Social behaviour
Solitary sourced
Territorial
No sourced
Activity
Diurnal sourced
Reproduction
Separate sexes sourced
Sexual dimorphism
Yes sourced
Seasonality
Waterfall-climbing stream goby; migrates from the sea into the rivers. sourced
Special features
Ventral sucker with which juveniles climb waterfalls; stream goby sourced

For anglers

Edibility
Not eaten sourced
Fishing method
Not a target species for angling; at most an incidental catch or usable as baitfish. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced
First aid
This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status. verified

Status & sources

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

Same genus Lentipes

More from the family Gobiidae

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