I have traveled to Okinawa in Japanese subtropics in June and have taken pictures of freshwater fish in a natural habitat in the water.
Some pictures of the fish and videos besides Stiphodon genus are introduced.
Around the mouth of a river.
The young fish crowd(Amphidromous migration) going upstream to a freshwater river from a sea.
Video clip is on youtube.
Pandaka trimaculata,Rinogobius sp,Sicyoputerus sp and others.
Fish from downstream.
Various fish and shrimp are seen in this videoclip.
http://tanzawa-sky-club.air-nifty.com/p ... /anago.jpg
Microphis (Coelonotus) leiaspis
Mugil cephalus cephalus
Rinogobius sp in a middle-class area on a river.
Video clip is blow.
I am not used to English. Therefore,It is likely to sometimes misunderstand it.