North American Native Fishkeeping
The first time I saw picture of a darter was in my
ichthyology class, second semester of my junior year. We’d just finished
covering marine fishes of the eastern US and were starting on the freshwater
fishes. I couldn’t believe my eyes. I never knew there were such beautiful fish
right outside my door. The first time I saw a darter in the flesh, I was
forever entranced.
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Redfin darter Etheostoma whipplei I caught while in Arkansas |
When most people think of North American fishes,
largemouth bass (Micropterus salmoides) and channel catfish (Ictalurus punctatus) are the first
things to come to mind. These large gamefish are the ones that are seen and
talked about the most, so it is no wonder that is where most minds go first. But
there is so much more in our waterways than just these well-known fish. Surprisingly
a lot of these are pretty easy to keep in a tank. They don’t need heaters like tropical
fishes and some can be kept in ponds year-round.
In the US we have a lot of members of the cyprinid family—minnows—that
are remarkably easy to care for. They are just like the barbs and rasbora of
Asia. These minnows are subdivided into dace, shiners, and chubs. They are
shoaling and prefer groups of six or more. North American minnows do best in
30+ gal (113 L) tanks and for the most part are just fine with other species of
minnows. My favorites are mountain redbelly dace (Chrosomus oreas), saffron shiner (Notropis rubricroceus), and turquoise shiner (Cyprinella monacha), but these are just the ones I have in my
backyard.
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Mountain redbelly dace (Chris Crippen @ Fishbase.org) |
For those that like the cute appeal of the corydoras and
other tropical catfishes, there are also cute catfish in the streams of North
America: the madtoms (Noturus spp). They have the typical catfish look
but stay small enough for a 30 + gal (113 L) tank. Some species are spotted or
speckled with a bit of color, but their most entertaining qualities are their
catfish antics and their adorable whiskered faces peeking out of rock caves.
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Tadpole madtom Noturus gyrinus (Ohio DNS) |
Darters (
Etheostoma
spp) and (
Percina spp) are the gems of North America. Hands down I believe they are the most
stunning fishes we have here. They have reds, blues, greens, and yellows to
match some of the most beautiful tropical fishes. But they have a catch:
darters come from cool, flowing water. You have to provide that if you keep
them in an aquarium. This often includes powerheads or simply a river manifold.
Darters are also territorial, so make sure to provide enough hiding spaces for
them in a tank. In the wild, they can just swim down to the next riffle; they
don’t have that luxury in a tank. I have seen a few tutorials for how to set up
a darter-specific tank like
this one from the North American Native Fishes
Association (NANFA). Or you could just use a setup typical of hillstream
loaches detailed
here at Loaches Online.
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Tangerine darter Percina aurantiaca (conservationfisheries.org) |
When most people think sunfish, they think about bluegill
(Lepomis macrochirus) or crappie (Pomoxis
nigromaculatus). These large cichlid-like fish are only a few of the
centracidae family found in the US. While not all of them are beautiful, there
are a few worth pointing out. The pygmy sunfishes (Elassoma spp) are certainly some of the most stunning. They are the
smallest fishes detailed today in this article; they can be kept in tanks as
small as 10 gal (37 L). Pygmy sunfishes are also the most delicate and can
prove difficult to feed. They are very shy and need a heavily planted tank with
things like anarcharis, hornwort, and duckweed. They were once described to me
as “not for the fishkeeper who needs to see their fish every day.” Unlike with
most of these fish, you probably won’t be able to find pygmy sunfish in your
backyard. They are generally restricted to coastal areas of the eastern US.
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Pygmy sunfish Elassoma gilberti male (Erica Wieser @ NANFA.org) |
For those that like to see their fish a little more
often, there are other more visible sunfish. The banded sunfish (Enneacanthus obesus) and bluespot
sunfish (Enneacanthus gloriosus) are
a good choice for a medium sized tank. With colors and temperament matching the
South American cichlids, they make an excellent fish for a 30 gal (113 L) to 70
gal (265 L) native tank. Unlike the darters and minnows, they prefer the pools
to the faster water.
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Banded sunfish (Tennessee Aquarium) |
Those with a much larger tank might enjoy the some of the
most brightly colored Lepomis spp
species like the long-eared sunfish (Lepomis
megalotis), redbreast sunfish (Lepomis
auritus), and pumpkinseed (Lepomis
gibbosus). These fishes will need a 100+ gal (378 L) tank as they get large
and are territorial much like the larger South American cichlids. These fishes also
make interesting alternatives to goldfish and koi in a pond. In clear water
their beautiful colors can easily be seen, especially during spawning.
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Longear sunfish (Brandon Brown @ NANFA) |
The North American fish lineup also includes some
livebearers and killifish. While these aren’t the most colorful, they are still
interesting to keep in aquariums nonetheless. Some of the best looking are the
flagfish (Jordanella floridae), northern studfish (Fundulus catenatus), and the sailfin molly (Poecilia latipinna).
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Northern Studfish (Stan Sung @ Aquabotanic.com) |
This isn't intended to be a comprehensive guide to North American natives. I just want to open your eyes with this article and let you know there are lots of choices out there. If you have a further interest in these fishes, I highly recommend joining the
NANFA forum. I am aware there is a bias in the listings of fish here:
they are almost all from the eastern US, but that is where I live. I am most
familiar with the fish in my backyard. I encourage you to get familiar with the
fish in your backyard no matter where you live. You never know what little
beauties you may find!