Tinbergen's Experiment - Key stimulus releasing fighting behavior of three-spined stickleback Gasterosteus aculeatus

Threat behavior of three-spined stickleback Gasterosteus aculeatus

Fighting behavior of three-spined stickleback Gasterosteus aculeatus released by its reflected image in a mirror

Courtship and navigation behavior of three-spined stickleback Gasterosteus aculeatus

Digging behavior of three-spined stickleback Gasterosteus aculeatus

Fanning behavior of three-spined stickleback Gasterosteus aculeatus (2)

Fanning behavior of three-spined stickleback Gasterosteus aculeatus (3)

Fanning behavior of three-spined stickleback Gasterosteus aculeatus (1)

Courtship behavior of female three-spined stickleback Gasterosteus aculeatus

'Zigzag dance' courtship behavior of three-spined stickleback Gasterosteus aculeatus

Courtship behavior of female three-spined stickleback Gasterosteus aculeatus (2)

Interruption of courtship behavior of male three-spined stickleback Gasterosteus aculeatus

Threat behavior of three-spined stickleback Gasterosteus aculeatus against Moroco steindachneri

Nesting of three-spined stickleback Gasterosteus aculeatus - Tunneling

Threat behavior of three-spined stickleback Gasterosteus aculeatus against Red swamp crayfish

Fanning behavior and repair of nest in three-spined stickleback Gasterosteus aculeatus

Territorial defense of male three-spined stickleback Gasterosteus aculeatus

Egg care of male three-spined stickleback Gasterosteus aculeatus

'Zigzag dance' and nest-introducing behavior of three-spined stickleback Gasterosteus aculeatus (2)

'Zigzag dance' and nest-introducing behavior of three-spined stickleback Gasterosteus aculeatus (1)

a male three-spined stickleback Gasterosteus aculeatus with nuptial coloration

Nesting of three-spined stickleback Gasterosteus aculeatus - Nest forming with its mouth

Swimming juvenile three-spined sticklebacks Gasterosteus aculeatus

Male three-spined stickleback Gasterosteus aculeatus under fanning turned out a female

Egg-predation defense by the deception of a male three-spined stickleback Gasterosteus aculeatus