Leptocottus sounds likely to me; they're common enough, and highly
voracious. I suspect they're feeding on invertebrates associated with the
algae, and not directly on algae. The size and body shape fit cottids. At
the martin pilings just down from the locks I've been seeing thousands of
very young greenlings, only about an inch long, in the tidepools.

Kevin

> ----------
> From: Kelly Mcallister[SMTP:mcallkrm at dfw.wa.gov]
> Reply To: mcallkrm at dfw.wa.gov
> Sent: Sunday, June 27, 1999 1:33 PM
> To: Jim McCoy
> Cc: 'Tweeters'
> Subject: Re: off topic -- fish question
>
>
>
> On Sun, 27 Jun 1999, Jim McCoy wrote:
>
> > (snip) These critters were only about 3"-7" long, pretty wide at or just
> > behind the head and tapering quickly to the base of the tail. Can
> anyone
> > tell me what these were? I'm a lifelong landlubber and am largely
> ignorant
> > about marine life.
>
> Sounds to me like they could have been Staghorn Sculpin (Leptocottus
> armatus). Kevin Li, what do you think?
>
> Kelly McAllister
>