Home · Balitoridae · Hillstream loach
Hillstream loach (Formosania davidi) — Balitoridae

Hillstream loach

Formosania davidi
Family: Balitoridae

The Hillstream loach (Formosania davidi) is a freshwater fish of the family Balitoridae that grows up to 8 cm.

Length
7.6 cm
Water
Freshwater
Diet
Herbivore
Behaviour
Small groups
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Harmless
Range
East Asia; fast-flowing clear mountain streams.
Edibility
Not eaten

Want the complete picture on the Hillstream loach?

Get the app

Description

David's hillstream loach is a hillstream loach (Gastromyzontidae) from East Asia. The species has an elongate, flattened body with broad, horizontally spread pectoral and pelvic fins that together form a sucker, with which it clings to stones in strong current. It inhabits fast-flowing, clear mountain streams with a rocky bottom. With its inferior mouth it rasps algae, diatoms and growth from the surface of stones. The species is harmless to humans.

Frequently asked questions

How do you recognise the Hillstream loach?

The Hillstream loach has an elongate, eel-like body, is mainly brown and shows a marbled pattern. Broad pectoral and pelvic fins form a sucker for attaching to stones in rapids.

Where does the Hillstream loach live?

The Hillstream loach lives in fresh water and is mostly found around sand or mud bottom. East Asia; fast-flowing clear mountain streams.

How big does the Hillstream loach get?

The Hillstream loach grows to a maximum of about 8 cm.

Is the Hillstream loach dangerous to humans?

No, the Hillstream loach is harmless to humans. None required: this species is harmless to humans.

Is the Hillstream loach edible?

The Hillstream loach is not usually eaten.

Fin

Want the complete picture on the Hillstream loach?

Point your camera at the fish and Fin names the species in seconds. Free, and the Hillstream loach is one of 12,519 species in the app.

Get the app →

All data

Identification

English name
Hillstream loach sourced
Scientific name
Formosania davidi
Family
Balitoridae

Appearance

Size class
Small verified
Max length (cm)
7.6 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Brown inferred
Pattern
Marbled inferred
Tail shape
Forked inferred
Mouth position
Inferior (downward) inferred
Lips
Thick / fleshy inferred
Barbels
No sourced
Dorsal fins
One continuous inferred
Dorsal spines
No sourced

Habitat & distribution

Water type
Freshwater sourced
Substrate
Sand / mud bottom sourced
Natural range
East Asia; fast-flowing clear mountain streams. inferred
Origin
Native sourced

Behaviour & biology

Diet
Herbivore sourced
Diet (detail)
Algae, diatoms and biofilm, rasped from stones sourced
Social behaviour
Small groups inferred
Territorial
No inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Broad pectoral and pelvic fins form a sucker for attaching to stones in rapids. 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
None required: this species is harmless to humans. sourced

Status & sources

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

Same genus Formosania

More from the family Balitoridae

Fin

Want the complete picture on the Hillstream loach?

Point your camera at the fish and Fin names the species in seconds. Free, and the Hillstream loach is one of 12,519 species in the app.

Get the app →
Is this the Hillstream loach? Get the app