I will need to get a wet suit before I snorkle that cool little
stream. The SRBD look emaciated. They are full grown fish, but
skinny. I think the Clinostomus are able to prey on flying insects,
like mosquitos, by jumping out of the water to take them in the air.
Their large, upturned mouths are suited to this. The Phoxinus, with
their tiny, subterminal mouths, can't do that. That have to compete
with everyone else for the subaquatic foods. Even the insects may be
scarce below the surface due to limited nutrients in the food chain.
Just an idea.
SRBD = southern redbelly dace
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