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This information contains historical data
that may be very old, but it does give a pretty complete picture of what has
gone on in the basin over the years. Not all established. Many records based
on one-time occurrences. Stockings are listed even if they failed. Extirpated populations are also in the
database. Introductions have occurred
due to gamefish stocking, bait bucket, aquariums, pet releases, ballast water
(zms, mitten crab) and incidently with plants.
Number of species in the family that have
Here is a list of foreign fishes
established, some widely like the carps and some locally like the
tilapia. Peacock cichlid in NE
Texas. Blue tilapia in Oklahoma
(Arkansas R and Canadian R.). Misgunus
in the Chicago and Des Planes system. Tench were stocked a long time ago and
may still be established in the lower Missouri system and upper Arkansas
system. Sailfin catfish in French Broad
drainage in western NC (Tennessee drainage) newly established. Platyfish in the South Platte drainage.
Red means established, some just
locally. Green means most likely established. The two frog species, the spotted jellyfish,
the daphnia (Atchafalaya), the Asian clam, and the nutria have been reported
as established right here in LA.
Bithynia is in the upper Allegheny in PA (Ohio drainage) and Chicago
area. Eubosmina is in Pymatuming Res.
(upper Ohio). Bythotrephes in two Ohio
reservoirs (upper Ohio).
Here is what makes up the native portion
of introduced fishes. The species in bold
appear to be more widespread.
This is a list of pathways of
introductions. The pie chart shows
relative percentages of number of species by pathway. Almost one-third of all species were
introduced for sportfishing, one-quarter were bait releases, etc. Foreign – biocontrol, aquariums, ballast
water, sport (Brown trout).
This map was developed by the Illinois
Natural History Survey. We need more data
to support this map.
This is a new animal I just learned
about, the carp louse.
This group is found
worldwide with 23 freshwater and marine species in US waters. However this
species is native to SE Asia.
been spread to other continents with shipments of goldfish. According to
William Poly at the California Academy of Sciences, it has been found in these
states. In Africa, they are parasitizing rainbow trout in culture
Hundreds of small snakeheads were
collected from the release of two fish in the now famous Maryland pond.
Argus collected but not established in CA FL MA MD NC
Maculata collected one in Massachusetts, but mostly on Oahu, Hawaii
Marulius established in Florida
Micropeltes collected from several New England states
Striata in aquarium industry in Hawaii
This whole family was recently banned from importation.
Rainbow smelt are anadromous and very
carnivorous and voracious feeders. Can reach 35 cm, average 20 cm.
Map shows specific point data only mapped
This is a freshwater jellyfish native to
China. It’s found in a wide range of habitats but most common in slow-moving
or stagnant waterbodies.
asexually when the water is warmest at the end of the summer.
Most likely it was imported with ornamental
It was first observed
in the US in Benson Creek near Frankfort Kentucky in 1916. They will consume
fish eggs and in turn are preyed upon by crayfish.
Still being found in new lakes similarly
like the zebra mussel has been.
Melanoides in Montana and Colorado. Radix
(Asian) in the Platte and upper Arkansas in CO. Japonica reported from Oklahoma and
Nebraska. Chinensis reported from the Miss Basin from IL, IN, IA, MN, WI. The New Zealand mudsnail is in the
headwaters of the Missouri R in MT. I
might assume that these species are all well established in order to be
detected and are probably more widespread than reported.
Mostly freshwater, but we do have some
Try to refine the data of not too precise
locations such as “found in the state” to reference it to the huc8 level. Point data is the best for fine analysis.
Trying to manage county mapping with huc mapping.
Geographically we can use records from