Exemplary father. (1930 - 1939)
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Lake, overgrown with shrubs.
Observing the life-thorns fish.
Barb builds a nest to lay their eggs, collecting pieces of algae.
Luring females to the nest.
The female lays eggs.
Exemplary father guards the nest and protects the eggs from destruction.
It removes from the slot snail, lizard drives away.
Fry bustle in the water.
The attack on the pike fish-thorn
Key wordsGermany, lake, fish