Solved A type of fish lay their eggs in freshwater streams.

The baitfish primer

Flow requirements for galaxiid fish spawning

European eel, facts and photos

Osmeridae - an overview

These fish are critical to New England, and they're disappearing

[Commentary] Tilapia: How an invasive fish came to dominate our ecology, food and psyche

Zombie Salmon Literally Rot Alive After Spawning

The Mysterious Eel

Fish Farming Is Not as Sustainable as We Thought

The Return of Salmon