Underwater Pictures from Trout Streams, Page 3

You can see the dwarf dolly I caught in this pool, hanging out after being released, just up/left from the center of the picture. You can't really tell it's a fish here, though.

The large caddisfly case (really less than 1/2 inch) is a Brachycentridae larva. The other cases are actually the protective sheaths of black fly (Simuliidae) pupae. The two antler-like pieces sticking out of each one are not legs, but antennal sheaths.

In this picture: Caddisfly Family Brachycentridae (Apple Caddis and Grannoms) and True Fly Family Simuliidae (Black Flies).

This is a tailed frog, genus Ascaphus that lives in cold fast streams of the west. Perhaps this critter is one reason that leech flies work in some trout streams.

Dwarf dolly varden

Same male dwarf dolly as in this picture and this one.

A large schools of white suckers travels the headwaters of a famous midwestern trout stream.

These are glossosomatids, Jason. They are probably Glossosoma nigrior, though it is possible that we are looking at mixed species. The ones to the right with their aggregate of similar sized grains are classic Glossosoma, while the ones to the left with the large anchor pebbles could possibly be Agapetus. Regardless, they're all commonly referred to as saddle case makers.

In this picture: Caddisfly Family Glossosomatidae (Saddle-case Makers).