All fish are not created equal.
Some are large, swift pelagic predators, that traverse
entire ocean basins over the course of their lives. Others, smaller but still of substantial
size, hunt the cloudy and fertile waters of estuaries and barrier lagoons, or the clear seas that wash over coral reefs and run in the channels between tropical
flats. Still other, smaller fish, the
marine equivalent of foxes and martens and weasels, seek their prey in the
shallows, the surf, and in open water, some using stealth, some using speed to
hunt down their food.
And then there are other fish that overwhelm all the others in
sheer abundance, small fish that move through the water in vast shimmering
shoals, feeding on plankton and tiny free-swimming creatures, and fed upon,
in turn, by everything else that lives in the sea. They are the forage fish, the small fish that, by dint of their numbers, weave the sea’s food web into a coherent
whole.
Forage fishes’ importance to ocean ecosystems was long ignored
by fisheries managers. Those that also supported important commercial fisheries, such as Atlantic herring,
Atlantic mackerel, northern anchovy, Pacific sardine and, more recently,
Atlantic menhaden, have been subject to fishery management plans, but such
plans generally addressed forage fish only in a single-species, single-fishery
context. That is, the management plans attempted
to keep landings at or below maximum sustainable yield, so that the stock could
remain healthy enough to maintain landings levels over the long term.
However, such management plans were always focused on
harvest, and on leaving just enough forage fish in the sea to maintain a sustainable harvest. They took no account of forage fishes’ roles
in the ecosystem, nor of the needs of a host of marine predators that might
range in size from smaller Spanish mackerel to humpback whales. And for those forage species that didn’t
support significant commercial fisheries, there was generally no protections
offered at all.
Slowly, that began to change. Just a few years ago, both the Pacific
Fishery Management Council and the Mid-Atlantic Fishery
Management Council adopted fishery management measures designed to protect
previously unmanaged stocks of forage fish.
Just
last August, the Atlantic Marine Fisheries Commission’s Atlantic Menhaden
Management Board, in a unanimous vote, decided to adopt ecosystem reference
points that, for the first time, would limit menhaden landings to a level that
would leave enough fish in the water to support the needs of coastal ecosystems,
and not just enough to support the long-term profits of the menhaden industry. And if the
ASMFC, just two months later, walked back that decision a bit by setting
2021/22 harvest at levels likely to exceed the ecosystem-based fishing
mortality target, they’ve still moved the ball forward a bit, reducing
landings by 10 percent, which is a better than average performance for the ASMFC.
But now, the stars may finally be aligning in a way that
will see federal forage fish legislation passed in the 117th
Congress.
Some such legislation has already been introduced in the 116th.
On April
10, 2019, Rep. Debbie Dingell (D-MI) introduced H.R. 2236, the Forage Fish
Conservation Act. That bill would
have, among other things, required the Scientific and Statistical Committee of
each regional fishery management council to provide such council with ongoing
scientific advice on
“maintaining a sufficient abundance, diversity, and localized
distribution of forage fish populations to support their role in marine ecosystems.”
H.R. 2236 would also have required each regional fishery
management council to
“develop a list of unmanaged forage fish occurring in the
area under its authority and prohibit the development of any new directed
forage fish fishery until the Council has considered the best scientific
information available and evaluated the potential impacts of forage fish
harvest on existing fisheries, fishing communities, and the marine ecosystem;
determined whether conservation and management of the forage fish fishery is
needed; if a determination is made that conservation and management is needed,
prepared and submitted to the Secretary [of Commerce] a fishery management plan
or amendment…; and received final, approved regulations from the Secretary… [internal numbering deleted]”
With the 116th Congress effectively over, neither bill is going anywhere this year. But the fact that Sen. Blumenthal elected to
introduce a forage fish bill so late in the session is a clear indication that
he intends to champion forage fishes’ cause in the 117th Congress,
meaning that forage fish legislation will almost certainly get a thorough
hearing, and may well achieve passage within the next two years.
An even better sign that forage fish will be on the next
Congress’ agenda is the inclusion
of a forage fish section, that reads very similarly to H.R. 2236, in Rep. Jared
Huffman’s (D-CA) recently-released discussion draft for reauthorization of the Magnuson-Stevens Fishery
Conservation and Management Act. When the Chair of the relevant House
subcommittee includes forage fish language in his Magnuson-Stevens reauthorization
bill, it’s pretty certain that such language is being seriously considered.
But passing forage fish legislation will not be a slam
dunk.
One of the biggest issues will be defining just what a
forage fish is. As everyone knows, big
fish eat smaller fish, and even fairly good-sized fish will probably be eaten by
something larger. To a mako shark,
bluefish and skipjack tuna are forage.
Blue marlin view yellowfin tuna the same way. And anyone who has spent enough time fishing
for bluefish tuna in the northeast knows that white sharks hang around the
bluefin schools, and think nothing of grabbing a 200- or 300-pound tuna attached
to an angler’s line.
Both H.R. 2236 and Sen. Blumenthal’s bill try to bring some
rationality to the discussion by noting that
“While most species function as prey of others at some life
stage, especially when small and young, forage fish maintain this important
trophic role throughout their life.”
The bills then define “forage fish” as
“any fish that, throughout its life cycle, is at a low
trophic level; contributes significantly to the diets of other fish, marine
mammals or birds; and serves as a conduit for energy transfer to a higher
trophic level; or any other fish specified as a forage fish for purposes of
this paragraph in a fishery management plan or amendment that is transmitted by
a Council and approved by the Secretary…”
Even though that definition provides some limits on what may
be deemed to be a forage fish, and even though the bills further define “low
trophic level” by saying
“The term ‘low trophic level’ means a position in the marine
food web in which the fish generally consume plankton,”
the idea of forage fish management makes some fishermen nervous,
particularly in the Pacific Northwest, where pollock
is considered an important forage species for the endangered Steller sea lion
(even though some
researchers argue that pollock provide so little nutrition that eating large
quantities of them will do the sea lions more harm than good), but also supports
the largest commercial fishery, gauged by the weight and value of the processed
product, in the United States.
That being the case, it’s easy to understand why fishermen
wouldn’t want Pacific pollock to be deemed a “forage fish” and managed on
the basis of how many can be eaten by Steller sea lions, and rather than how
many can be turned into pre-frozen fish sandwiches, fish sticks and such.
The bills try to get around the issue by saying that
“Forage fish are generally small to
intermediate-sized species, occurring in schools or dense aggregations, and function
as a main pathway for energy to flow from phyto- and zooplankton to higher
trophic level predators such as tuna, Alaska pollock, and other
wildlife, in marine ecosystems, [emphasis added]”
thus making it clear that Alaska pollock feed on forage
fish, and are not forage fish themselves.
Whether such language will be enough to make the pollock
fishermen happy remains to be seen.
And pollock fishermen are only one of the industries likely to oppose any forage fish bill.
On the
East Coast, there are companies that have invested millions of dollars in the
boats and gear needed to engage in high-volume, low value fisheries for species
such as Atlantic
herring, which saw over 100 million pounds landed in 2017, at a price of
roughly 25 cents per pound. It’s not
likely that participants in that fishery, or in fisheries for other high
volume/low value species such as Atlantic mackerel (roughly 15 million pounds
at about the same price) will stand by quietly while a portion of what had been
their catch is allocated away from the commercial fishery and instead used to
support populations of bluefin tuna, striped bass, and humpback whales.
Similar pushback will undoubtedly come from the Pacific
coast, where sardines, anchovies, herring, and mackerel support other
large-scale fisheries.
Forage fish legislation won’t be passed without a fight.
Yet it is a fight worth having,
for if forage fish—the animals that pass energy between the highest and lowest
trophic level species, and so knit the food web together—are managed only for
harvest, and not for their ecosystem values as well, the resultant risk to
large predators, and the fisheries that depend upon them, could be very real.