Spawning of Gnathopogon caerulescens on a gravel 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 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

ホンモロコの琵琶湖沿岸での産卵行動

Spawning behaviour of a butterflyfish

Upstream migration of common and crucian carps to spawn in a river flowing into Lake Biwa

Sketches of Lake Biwa and the Uji River

Spawning in a carp

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

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

Spawning behavior of Opsariichthys uncirostris

Reproductive behaviour of Callionymus ornatipinnis: 2. spawning

Spawning behavior of the messmate pipefish Corythoichthys haematopterus

Spawning behavior of bullethead parrotfish (Scarus sordidus)

Spawning behavior of bower’s Bower’s parrotfish (Scarus bowersi)

Spawning behavior of Rivulated parrotfishsurf parrotfish (Scarus rivulatus)

ホンモロコの内湖流入河川での産卵行動2

ホンモロコの内湖流入河川での産卵行動1

Predation behaviour of a Hydaticus bowringii adult on a frog egg

Paraoviposition of a male Sympetrum eroticum eroticum

Drying shrimp fishing nets on the shore of Lake Kamo in Ryotsu where sea water enters freshwater lake. It is also a place for oyster farming

自然下におけるイタセンパラの産卵行動