Aquaria Central ......................Smallmouth Bass


Micropterus dolomieui
Common names:.......none
Origin:......................Eastern and Northern US
Max size:..................16"
PH:............-..............6.8-7.2
Temperature:...........58-70 F.
Min tank size:..........90 gallons
Food:.........................Live foods, meaty food

The smallmouth bass by no means has a "smallmouth." Like its relatives, the smallmouth is another example of a true predatory sunfish. It exists throughout eastern and northern U.S. where it is unparelled as a freshwater sportfish.

For the lay person, the smallmouth is merely identical to the largemouth, however there are many characteristics that seperate the two. Unlike the largemouth, the eye does not extend past the eye, but rests just before it (hence the name smallmouth). The smallmouth is taller, usually darker, with less greenish markings, and there are somewhat diffused but dark vertical bands that make up most of the fishes mottling. However, identification can become tricky in that the smallmouth, like all Micropterus spp., have a dark mid-horizontal band, and their face has scattered dark lines. The smallmouth does in fact grow smaller than the largemouth.

Because this fish is native, it is not available on the retail market, therfore you have to collect them. As with all Micropterus spp., the best way to collect them is by angling. If you cannot do this, you might be able to get a specimen through aquatic consultants with the right permits. As with all native gamefish, check you local Department of Fish and Game laws before collecting any.

If the largemouth bass is a warmth loving fish, which likes shallow water with plenty of vegetation, than the smallmouth is exactly the opposite. Smallmouths enjoy colder, northern streams, rivers and lakes, with plenty of rocks and sunk trees. Keep this in mind when setting up the aquarium. They require cold (58-70F), neutral water with a good current and plenty of oxygen. Unlike the largemouth they enjoy rocks, and driftwood more than vegetation. For food, live foods will be needed to make up the bulk of the fish's diet. In the wild all black basses have been known to take anything from brine shrimp to muskrats and sparrows. In the aquarium, live fish, crustaceans, and especially worms and nightcrawlers are relished. After a while most black bass learn to eat dead foods like beefheart and carnivorous fish pellets. All black bass are super-predators and are extremely efficient, cunning fish. Thus the best companions are other bass of any species, that are the same size, or native catfish. They look excellent with native sunfish but beware, bass are evolved to eat flat bodied spiny fish. A tank no less than 90 gallons is required.

Breeding is accomplished earlier than most species of bass. Like all species, they are quite prolific in fish farms and ponds. The male tends to the brood and plays a more important role in reproduction.

The smallmouth is a fantastic native species that does surprisingly well in captivity. It allows the fisherman to understand his quarry up-close and personal.

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