What Fish Eat
Aquatic insects make up the majority of a fish's diet. The four key insect orders (listed first and not including Streamers or Terrestrials) that emerge from streams and lakes are:
Streamers
A streamer is a wet fly pattern which imitates a small baitfish that larger trout will feed on. There are a number of streamer patterns which can be effective in trout habitat - lakes and streams. Listed in the table below are just a couple of patterns that I've found to catch trout in the Sierra Nevada.
Streamer Patterns
| Pattern Name | Color | Hook Size | Thumbnail Image |
|---|---|---|---|
| Matuka | Black Body | # 10 | 
|
| Wooly Bugger | Olive Green Body | # 16 | 
|
| Zonker | Green Body | # 8 | 
|
Photo of October Caddisfly by P. Michael Carl © The Ecological Angler
