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Argentine humphead (Gymnogeophagus balzanii) — Cichlidae

Argentine humphead

Gymnogeophagus balzanii
Family: Cichlidae

The Argentine humphead (Gymnogeophagus balzanii) is a freshwater fish of the family Cichlidae that grows up to 12 cm.

Length
12 cm
Water
Freshwater
Diet
Carnivore
Body shape
Flat / disc-shaped
Substrate
Mixed bottom
Danger
Harmless
Range
South America: Argentina, Brazil, Paraguay, Uruguay
Edibility
Commonly eaten

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Description

The Argentine humphead is a cichlid from fresh water of the Parana-Paraguay basin in southern South America. The species grows to about 12 cm and has a deep, greyish body with glittering spots; adult males develop a conspicuous fatty hump on the forehead. As a bottom-dweller it sifts mouthfuls of sand, filtering out small invertebrates and detritus. It is a mouthbrooder. The fish is harmless to humans and is known from the aquarium trade.

Frequently asked questions

How do you recognise the Argentine humphead?

The Argentine humphead has a flattened, disc-shaped body and is mainly silver-grey.

Where does the Argentine humphead live?

The Argentine humphead lives in fresh water and is mostly found around mixed bottom. South America: Argentina, Brazil, Paraguay, Uruguay

How big does the Argentine humphead get?

The Argentine humphead grows to a maximum of about 12 cm.

Is the Argentine humphead dangerous to humans?

No, the Argentine humphead 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 Argentine humphead edible?

Yes, the Argentine humphead is commonly eaten.

More photos

Argentine humphead (Gymnogeophagus balzanii) — Cichlidae — 2
iNaturalist ((c) EmhartVuletich, some rights reserved (CC BY-NC))
Argentine humphead (Gymnogeophagus balzanii) — Cichlidae — 3
iNaturalist ((c) inzaenity, some rights reserved (CC BY-NC))
Argentine humphead (Gymnogeophagus balzanii) — Cichlidae — 4
Wikimedia Commons — CHUCAO (CC BY-SA 3.0)
Argentine humphead (Gymnogeophagus balzanii) — Cichlidae — 5
Wikimedia Commons — CHUCAO (CC BY-SA 3.0)
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All data

Identification

English name
Argentine humphead sourced
Scientific name
Gymnogeophagus balzanii
Family
Cichlidae
Other names
Argentine humphead; Earth eater; Paraguay Mouthbrooder verified

Appearance

Size class
Small verified
Max length (cm)
12.0 verified
Body shape
Flat / disc-shaped sourced
Dominant colour
Silver / grey sourced
Tail shape
Rounded inferred

Habitat & distribution

Water type
Freshwater sourced
Substrate
Mixed bottom sourced
Natural range
South America: Argentina, Brazil, Paraguay, Uruguay sourced
Origin
Native inferred

Behaviour & biology

Diet
Carnivore inferred
Diet (detail)
Small fishes, crustaceans and invertebrates inferred
Territorial
Yes inferred
Reproduction
Separate sexes inferred
Sexual dimorphism
Yes sourced
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred

For anglers

Edibility
Commonly eaten inferred
Fishing method
Small in size and barely an angling target; mostly caught incidentally or as baitfish. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless verified
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 Gymnogeophagus

More from the family Cichlidae

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