Group　spawning by non-territorial male of P.aurigarius

Pair spawning by territorial male of pteragogus aurigarius

Streaking by non-territorial male of P.aurigarius

Territorial contest in male Chrysozephyrus smaragdinus

Spawning of "Luciola cruciata" (1); Simultaneous spawning by multiple females

Intrusion of cuckold male bluegill into spawning nest

Spawning behavior (territoriality) of Rhodeus ocellatus kurumeus, Yao, Osaka, JAPAN

the guard of eggs by paternal millipede, Brachycybe nodulosa Verhoeff

Indiscriminate consumption of unrelated eggs by a gravid female and a satellite male in natural nests

Egg care of male three-spined stickleback Gasterosteus aculeatus

Spawning of Gnathopogon caerulescens on a gravel shore of Lake Biwa

Spawning of Gnathopogon caerulescens on a sandy shore of Lake Biwa

Spawning of Gnathopogon caerulescens on a gravel shore of Lake Biwa

Spawning of Gnathopogon caerulescens on a sandy shore of Lake Biwa

Spawning of Gnathopogon caerulescens on a rocky shore of Lake Biwa

Spawning of Gnathopogon caerulescens on a sandy shore of Lake Biwa

Nest defence against a brood parasite by a male Japanese bush warbler

Spawning behavior of the Far Eastern catfish, Silurus asotus in paddy fields

Spawning behaviour of Pseudogobio esocinus (Cypriniformes, Cyprinidae) in an experimental tank

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

Egg eating by the natural nest den-master

oophagy by larvae of Odorrana utsunomiyaorum

Interruption of copulation by an intruding male

Agitating by the natural nest den-master

Tail fanning by the artificial nest den-master