Johnny darter (Etheostoma nigrum)

Scientific name: Etheostoma nigrum Rafinesque, 1820

Johnny darter (Etheostoma nigrum)

The Johnny darter (Etheostoma nigrum) is a freshwater fish of the family Percidae. In the aquarium it needs water at 4–18°C (39–64°F).

Johnny darter care at a glance

Temperature
4–18°C (39–64°F)

Biology

Occur in sandy and muddy, sometimes rocky, pools of headwaters, creeks, and small to medium rivers; and in sandy shores of lakes; also found in streams. Adults feed on midge larvae, mayfly nymphs, caddis larvae, and microcrustaceans; young on entomostracans and tiny midge larvae. Eggs are found clustered on underside of stone and guarded by males.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Etheostoma nigrum
Family
Percidae (Perches)
Order
Perciformes (Perch-like fish)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
7.2
Common length
3.9
Environment
Freshwater;; pH range: 7.0 - ?; dH range: ? - 15 benthopelagic
Climate
Temperate
Distribution
North America: St. Lawrence-Great Lakes, Hudson Bay, and Mississippi River basins from Hudson Bay to southern Mississippi in the USA, and from Quebec in Canada and from Virginia in the USA to Saskatchewan in Canada and Colorado in the USA; and on Atlantic and Gulf Slope drainages in the USA.
Conservation status (IUCN)
Not Evaluated
Threat to humans
Harmless
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (K=0.95; tmax=4; Fec=47-691)

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

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