Our animals

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Northern lakes and seas

The ocean

Tropical rivers and lakes

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Dwarf mormyrid

Electric eel

Cave tetra

Neon tetra

Arowana

Philippines crocodile

Arapaima

Piranha

Stream aquarium

Under the riverbank

River cichlids

The plants in the river

Angelfish

Armored predators

Discusfish

Select species

Select a species to read more


Altum angelfish

Altum angelfish

Flame-back Bleeding Heart Tetra

Flame-back Bleeding Heart Tetra

Bleeding heart tetra

Bleeding heart tetra

Burgess' Cory

Burgess' Cory

Sterba´s Cory

Sterba´s Cory

Giant peruvian marbled whiptail

Giant peruvian marbled whiptail

Giant Whiptail Catfish

Giant Whiptail Catfish

Spoon face whiptail

Spoon face whiptail

South American river flounder

South American river flounder

Argentine humphead

Argentine humphead

Argentine humphead

Argentine humphead

Spotted algae eater

Spotted algae eater

Silver flying fox

Silver flying fox

Colombian Blue Eyed Pleco

Colombian Blue Eyed Pleco

Argentine humphead

Argentine humphead

Facts

LatinGymnogeophagus balzanii
Size20 cm
FoodSmall crustaceans, insects and worms
HabitatSluggish parts og tributaries and creeks
IUCN

Not evaluated

LocationRio Paraná basin in Brazil, Paraguay and Argentina, also Rio Uruguay
Map

With a bump on the head

This fish isn’t called the Argentine humphead for nothing. The males have a huge hump on their forehead, which tells the other males who’s the boss. The fish with the largest hump is the Alpha male.

Hide their young in their mouths

Like many other cichlids, the Argentine humphead is a mouthbrooder. This means that the female carries the fertilised eggs in her mouth. When the eggs hatch, the fry can live in their mother’s mouth for several weeks.


Poison Frog

African river

Archerfish

Endangered species

Lake Tanganyika

Lake Malawi