insignis (Richardson, 1836)
contributors to this species:
Birger Kamprath (3)
||Inhabits rocky riffles
and runs of clear, fast creeks and small to medium rivers. The
body of the Margined Madtom is yellow to slate gray above and
white or light below. The fins are yellow or light gray and the
median fins, except for the adipose fin, have a black edge. Fin
borders are blackest in clear streams and may be only dusky in
color in turbid water. Individuals in the Dan River, Virginia,
have dark spots on the body and fins. The upper jaw projects beyond
the lower jaw. The rear edge of the pectoral spine has large teeth.
The caudal fin edge is straight or slightly rounded. The anal
fin has 15-21 rays. Aquarium Care: The Madtoms
are well suited to aquarium life. Provide river gravel and smooth
rounded stones for hiding places during the day. A power filter
at one end of the tank will provide the conditions of a flowing
stream for these catfish. Can be housed with other North American
fishes such as minnows, darters and shiners. Diet:They
like most meaty food, such as cut-up earth worms, frozen blood
worm and prawns. They will also take tablet and pellet foods.
A varied diet will keep them in optimum health.
Atlantic Slope from St. Lawrence River and southeastern Lake Ontario
drainages in New York to upper Altamaha River drainage in Georgia,
USA; upper Kanawha (New) River system in Virginia and North Carolina,
USA; upper Monongahela River system in the USA.
||Florida Museum of Natural