The hatchery has a capacity of 6,000 adult fish and releases about 3.4 million juveniles into the river system each year.

Each holding system controls the water purity and pH and has a capacity of 10,350 adult fish.

The waterway that ran through the narrow valley was a salmon-spawning stream, where adult fish returned every year.

A single power plant can impinge a million adult fish in just three weeks.

This species is believed to spawn during the summer months, when adult fish have been observed to congregate on sandy patches.

Archerfish are remarkably accurate in their shooting; adult fish almost always hit the target on the first shot.

Our experience has shown that over a longer period a larger mesh size means more adult fish.

These conditions seemed to allow more adult fish than usual to survive the rigors of spawning.

The fish identified ranged from young recruits to mature adult fish, indicating a healthy population.

They are omnivores, but adult fish like to eat smaller fishes in particular.